Home / 42,275.40-63,394.39-12,687.55

Finding the Fourth Proportional to 42,275.40, 63,394.39 and 12,687.55

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Solution

The fourth proportional to 42,275.40, 63,394.39 and 12,687.55 is: 19,025.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,275.40 : 63,394.39 = 12,687.55 : x
  2. Step 2: Convert to fraction form
    42,275.40/63,394.39 = 12,687.55/x
  3. Step 3: Cross multiply
    42,275.40x = 63,394.39 × 12,687.55
  4. Step 4: Simplify right side
    42,275.40x = 804,319,492.84
  5. Step 5: Solve for x
    x = 804,319,492.84/42,275.40
  6. Step 6: Final answer
    x = 19,025.71

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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.