Home / 11,902.07-16,428.12-7,423.13

Finding the Fourth Proportional to 11,902.07, 16,428.12 and 7,423.13

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Solution

The fourth proportional to 11,902.07, 16,428.12 and 7,423.13 is: 10,245.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,902.07 : 16,428.12 = 7,423.13 : x
  2. Step 2: Convert to fraction form
    11,902.07/16,428.12 = 7,423.13/x
  3. Step 3: Cross multiply
    11,902.07x = 16,428.12 × 7,423.13
  4. Step 4: Simplify right side
    11,902.07x = 121,948,070.42
  5. Step 5: Solve for x
    x = 121,948,070.42/11,902.07
  6. Step 6: Final answer
    x = 10,245.95

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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.