Home / 15,403.02-21,256.21-8,329.45

Finding the Fourth Proportional to 15,403.02, 21,256.21 and 8,329.45

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Solution

The fourth proportional to 15,403.02, 21,256.21 and 8,329.45 is: 11,494.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.02 : 21,256.21 = 8,329.45 : x
  2. Step 2: Convert to fraction form
    15,403.02/21,256.21 = 8,329.45/x
  3. Step 3: Cross multiply
    15,403.02x = 21,256.21 × 8,329.45
  4. Step 4: Simplify right side
    15,403.02x = 177,052,538.38
  5. Step 5: Solve for x
    x = 177,052,538.38/15,403.02
  6. Step 6: Final answer
    x = 11,494.66

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Half scale
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Double scale
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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.