Home / 13,437.96-18,545.54-7,470.78

Finding the Fourth Proportional to 13,437.96, 18,545.54 and 7,470.78

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Solution

The fourth proportional to 13,437.96, 18,545.54 and 7,470.78 is: 10,310.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.96 : 18,545.54 = 7,470.78 : x
  2. Step 2: Convert to fraction form
    13,437.96/18,545.54 = 7,470.78/x
  3. Step 3: Cross multiply
    13,437.96x = 18,545.54 × 7,470.78
  4. Step 4: Simplify right side
    13,437.96x = 138,549,649.32
  5. Step 5: Solve for x
    x = 138,549,649.32/13,437.96
  6. Step 6: Final answer
    x = 10,310.32

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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.