Home / 15,140.85-22,711.40-5,280.12

Finding the Fourth Proportional to 15,140.85, 22,711.40 and 5,280.12

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Solution

The fourth proportional to 15,140.85, 22,711.40 and 5,280.12 is: 7,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.85 : 22,711.40 = 5,280.12 : x
  2. Step 2: Convert to fraction form
    15,140.85/22,711.40 = 5,280.12/x
  3. Step 3: Cross multiply
    15,140.85x = 22,711.40 × 5,280.12
  4. Step 4: Simplify right side
    15,140.85x = 119,918,917.37
  5. Step 5: Solve for x
    x = 119,918,917.37/15,140.85
  6. Step 6: Final answer
    x = 7,920.22

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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.