Home / 15,691.07-23,423.70-13,445.72

Finding the Fourth Proportional to 15,691.07, 23,423.70 and 13,445.72

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Solution

The fourth proportional to 15,691.07, 23,423.70 and 13,445.72 is: 20,071.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.07 : 23,423.70 = 13,445.72 : x
  2. Step 2: Convert to fraction form
    15,691.07/23,423.70 = 13,445.72/x
  3. Step 3: Cross multiply
    15,691.07x = 23,423.70 × 13,445.72
  4. Step 4: Simplify right side
    15,691.07x = 314,948,394.45
  5. Step 5: Solve for x
    x = 314,948,394.45/15,691.07
  6. Step 6: Final answer
    x = 20,071.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.