Home / 28,360.09-39,135.36-15,612.76

Finding the Fourth Proportional to 28,360.09, 39,135.36 and 15,612.76

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Solution

The fourth proportional to 28,360.09, 39,135.36 and 15,612.76 is: 21,544.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360.09 : 39,135.36 = 15,612.76 : x
  2. Step 2: Convert to fraction form
    28,360.09/39,135.36 = 15,612.76/x
  3. Step 3: Cross multiply
    28,360.09x = 39,135.36 × 15,612.76
  4. Step 4: Simplify right side
    28,360.09x = 611,010,983.19
  5. Step 5: Solve for x
    x = 611,010,983.19/28,360.09
  6. Step 6: Final answer
    x = 21,544.75

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Half scale
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Double scale
Find fourth proportional to 28,361.09, 39,136.74 and 15,613.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.