Home / 15,988.72-22,079.64-15,116.08

Finding the Fourth Proportional to 15,988.72, 22,079.64 and 15,116.08

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Solution

The fourth proportional to 15,988.72, 22,079.64 and 15,116.08 is: 20,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.72 : 22,079.64 = 15,116.08 : x
  2. Step 2: Convert to fraction form
    15,988.72/22,079.64 = 15,116.08/x
  3. Step 3: Cross multiply
    15,988.72x = 22,079.64 × 15,116.08
  4. Step 4: Simplify right side
    15,988.72x = 333,757,604.61
  5. Step 5: Solve for x
    x = 333,757,604.61/15,988.72
  6. Step 6: Final answer
    x = 20,874.57

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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.