Home / 15,988.42-23,979.90-7,221.28

Finding the Fourth Proportional to 15,988.42, 23,979.90 and 7,221.28

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Solution

The fourth proportional to 15,988.42, 23,979.90 and 7,221.28 is: 10,830.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.42 : 23,979.90 = 7,221.28 : x
  2. Step 2: Convert to fraction form
    15,988.42/23,979.90 = 7,221.28/x
  3. Step 3: Cross multiply
    15,988.42x = 23,979.90 × 7,221.28
  4. Step 4: Simplify right side
    15,988.42x = 173,165,572.27
  5. Step 5: Solve for x
    x = 173,165,572.27/15,988.42
  6. Step 6: Final answer
    x = 10,830.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.