Home / 10,072.30-15,124.65-7,318.30

Finding the Fourth Proportional to 10,072.30, 15,124.65 and 7,318.30

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Solution

The fourth proportional to 10,072.30, 15,124.65 and 7,318.30 is: 10,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,072.30 : 15,124.65 = 7,318.30 : x
  2. Step 2: Convert to fraction form
    10,072.30/15,124.65 = 7,318.30/x
  3. Step 3: Cross multiply
    10,072.30x = 15,124.65 × 7,318.30
  4. Step 4: Simplify right side
    10,072.30x = 110,686,726.10
  5. Step 5: Solve for x
    x = 110,686,726.10/10,072.30
  6. Step 6: Final answer
    x = 10,989.22

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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.