Home / 18,966.15-28,428.12-7,108.56

Finding the Fourth Proportional to 18,966.15, 28,428.12 and 7,108.56

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Solution

The fourth proportional to 18,966.15, 28,428.12 and 7,108.56 is: 10,654.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.15 : 28,428.12 = 7,108.56 : x
  2. Step 2: Convert to fraction form
    18,966.15/28,428.12 = 7,108.56/x
  3. Step 3: Cross multiply
    18,966.15x = 28,428.12 × 7,108.56
  4. Step 4: Simplify right side
    18,966.15x = 202,082,996.71
  5. Step 5: Solve for x
    x = 202,082,996.71/18,966.15
  6. Step 6: Final answer
    x = 10,654.93

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1.5x scale

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.