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Finding the Fourth Proportional to 28,031.41, 42,047.28 and 8,310.13

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Solution

The fourth proportional to 28,031.41, 42,047.28 and 8,310.13 is: 12,465.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.41 : 42,047.28 = 8,310.13 : x
  2. Step 2: Convert to fraction form
    28,031.41/42,047.28 = 8,310.13/x
  3. Step 3: Cross multiply
    28,031.41x = 42,047.28 × 8,310.13
  4. Step 4: Simplify right side
    28,031.41x = 349,418,362.95
  5. Step 5: Solve for x
    x = 349,418,362.95/28,031.41
  6. Step 6: Final answer
    x = 12,465.24

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Similar ratio
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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.