Home / 10,020.20-15,030.43-9,411.35

Finding the Fourth Proportional to 10,020.20, 15,030.43 and 9,411.35

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Solution

The fourth proportional to 10,020.20, 15,030.43 and 9,411.35 is: 14,117.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,020.20 : 15,030.43 = 9,411.35 : x
  2. Step 2: Convert to fraction form
    10,020.20/15,030.43 = 9,411.35/x
  3. Step 3: Cross multiply
    10,020.20x = 15,030.43 × 9,411.35
  4. Step 4: Simplify right side
    10,020.20x = 141,456,538.70
  5. Step 5: Solve for x
    x = 141,456,538.70/10,020.20
  6. Step 6: Final answer
    x = 14,117.14

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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.