Home / 40,841.78-61,271.18-12,760.70

Finding the Fourth Proportional to 40,841.78, 61,271.18 and 12,760.70

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Solution

The fourth proportional to 40,841.78, 61,271.18 and 12,760.70 is: 19,143.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,841.78 : 61,271.18 = 12,760.70 : x
  2. Step 2: Convert to fraction form
    40,841.78/61,271.18 = 12,760.70/x
  3. Step 3: Cross multiply
    40,841.78x = 61,271.18 × 12,760.70
  4. Step 4: Simplify right side
    40,841.78x = 781,863,146.63
  5. Step 5: Solve for x
    x = 781,863,146.63/40,841.78
  6. Step 6: Final answer
    x = 19,143.71

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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.