Home / 40,710.76-61,070-12,631.12

Finding the Fourth Proportional to 40,710.76, 61,070 and 12,631.12

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Solution

The fourth proportional to 40,710.76, 61,070 and 12,631.12 is: 18,947.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,710.76 : 61,070 = 12,631.12 : x
  2. Step 2: Convert to fraction form
    40,710.76/61,070 = 12,631.12/x
  3. Step 3: Cross multiply
    40,710.76x = 61,070 × 12,631.12
  4. Step 4: Simplify right side
    40,710.76x = 771,382,498.40
  5. Step 5: Solve for x
    x = 771,382,498.40/40,710.76
  6. Step 6: Final answer
    x = 18,947.88

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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.