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Finding the Fourth Proportional to 22,030.71, 30,402.40 and 11,959.15

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Solution

The fourth proportional to 22,030.71, 30,402.40 and 11,959.15 is: 16,503.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,030.71 : 30,402.40 = 11,959.15 : x
  2. Step 2: Convert to fraction form
    22,030.71/30,402.40 = 11,959.15/x
  3. Step 3: Cross multiply
    22,030.71x = 30,402.40 × 11,959.15
  4. Step 4: Simplify right side
    22,030.71x = 363,586,861.96
  5. Step 5: Solve for x
    x = 363,586,861.96/22,030.71
  6. Step 6: Final answer
    x = 16,503.64

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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.