Home / 28,444.60-42,679.70-12,854.20

Finding the Fourth Proportional to 28,444.60, 42,679.70 and 12,854.20

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Solution

The fourth proportional to 28,444.60, 42,679.70 and 12,854.20 is: 19,287.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,444.60 : 42,679.70 = 12,854.20 : x
  2. Step 2: Convert to fraction form
    28,444.60/42,679.70 = 12,854.20/x
  3. Step 3: Cross multiply
    28,444.60x = 42,679.70 × 12,854.20
  4. Step 4: Simplify right side
    28,444.60x = 548,613,399.74
  5. Step 5: Solve for x
    x = 548,613,399.74/28,444.60
  6. Step 6: Final answer
    x = 19,287.08

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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.