Home / 15,454.86-21,327.90-8,740.56

Finding the Fourth Proportional to 15,454.86, 21,327.90 and 8,740.56

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Solution

The fourth proportional to 15,454.86, 21,327.90 and 8,740.56 is: 12,062.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.86 : 21,327.90 = 8,740.56 : x
  2. Step 2: Convert to fraction form
    15,454.86/21,327.90 = 8,740.56/x
  3. Step 3: Cross multiply
    15,454.86x = 21,327.90 × 8,740.56
  4. Step 4: Simplify right side
    15,454.86x = 186,417,789.62
  5. Step 5: Solve for x
    x = 186,417,789.62/15,454.86
  6. Step 6: Final answer
    x = 12,062.08

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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.