Home / 15,454.40-21,327.96-8,740.66

Finding the Fourth Proportional to 15,454.40, 21,327.96 and 8,740.66

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Solution

The fourth proportional to 15,454.40, 21,327.96 and 8,740.66 is: 12,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.40 : 21,327.96 = 8,740.66 : x
  2. Step 2: Convert to fraction form
    15,454.40/21,327.96 = 8,740.66/x
  3. Step 3: Cross multiply
    15,454.40x = 21,327.96 × 8,740.66
  4. Step 4: Simplify right side
    15,454.40x = 186,420,417.13
  5. Step 5: Solve for x
    x = 186,420,417.13/15,454.40
  6. Step 6: Final answer
    x = 12,062.62

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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.