Home / 15,701.32-21,666.90-8,988.04

Finding the Fourth Proportional to 15,701.32, 21,666.90 and 8,988.04

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Solution

The fourth proportional to 15,701.32, 21,666.90 and 8,988.04 is: 12,402.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.32 : 21,666.90 = 8,988.04 : x
  2. Step 2: Convert to fraction form
    15,701.32/21,666.90 = 8,988.04/x
  3. Step 3: Cross multiply
    15,701.32x = 21,666.90 × 8,988.04
  4. Step 4: Simplify right side
    15,701.32x = 194,742,963.88
  5. Step 5: Solve for x
    x = 194,742,963.88/15,701.32
  6. Step 6: Final answer
    x = 12,402.97

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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.