Home / 15,617.16-21,554.10-8,902.80

Finding the Fourth Proportional to 15,617.16, 21,554.10 and 8,902.80

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Solution

The fourth proportional to 15,617.16, 21,554.10 and 8,902.80 is: 12,287.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.16 : 21,554.10 = 8,902.80 : x
  2. Step 2: Convert to fraction form
    15,617.16/21,554.10 = 8,902.80/x
  3. Step 3: Cross multiply
    15,617.16x = 21,554.10 × 8,902.80
  4. Step 4: Simplify right side
    15,617.16x = 191,891,841.48
  5. Step 5: Solve for x
    x = 191,891,841.48/15,617.16
  6. Step 6: Final answer
    x = 12,287.24

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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.