Home / 15,088.07-20,821.65-9,123.71

Finding the Fourth Proportional to 15,088.07, 20,821.65 and 9,123.71

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Solution

The fourth proportional to 15,088.07, 20,821.65 and 9,123.71 is: 12,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.07 : 20,821.65 = 9,123.71 : x
  2. Step 2: Convert to fraction form
    15,088.07/20,821.65 = 9,123.71/x
  3. Step 3: Cross multiply
    15,088.07x = 20,821.65 × 9,123.71
  4. Step 4: Simplify right side
    15,088.07x = 189,970,592.21
  5. Step 5: Solve for x
    x = 189,970,592.21/15,088.07
  6. Step 6: Final answer
    x = 12,590.79

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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.