Home / 15,302.26-21,118.60-8,587.90

Finding the Fourth Proportional to 15,302.26, 21,118.60 and 8,587.90

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Solution

The fourth proportional to 15,302.26, 21,118.60 and 8,587.90 is: 11,852.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,302.26 : 21,118.60 = 8,587.90 : x
  2. Step 2: Convert to fraction form
    15,302.26/21,118.60 = 8,587.90/x
  3. Step 3: Cross multiply
    15,302.26x = 21,118.60 × 8,587.90
  4. Step 4: Simplify right side
    15,302.26x = 181,364,424.94
  5. Step 5: Solve for x
    x = 181,364,424.94/15,302.26
  6. Step 6: Final answer
    x = 11,852.13

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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.