Home / 28,275.27-42,415.13-7,498.77

Finding the Fourth Proportional to 28,275.27, 42,415.13 and 7,498.77

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Solution

The fourth proportional to 28,275.27, 42,415.13 and 7,498.77 is: 11,248.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.27 : 42,415.13 = 7,498.77 : x
  2. Step 2: Convert to fraction form
    28,275.27/42,415.13 = 7,498.77/x
  3. Step 3: Cross multiply
    28,275.27x = 42,415.13 × 7,498.77
  4. Step 4: Simplify right side
    28,275.27x = 318,061,304.39
  5. Step 5: Solve for x
    x = 318,061,304.39/28,275.27
  6. Step 6: Final answer
    x = 11,248.75

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Half scale
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Double scale
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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.