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Finding the Fourth Proportional to 40,959.59, 61,438.77 and 13,257.59

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Solution

The fourth proportional to 40,959.59, 61,438.77 and 13,257.59 is: 19,886.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,959.59 : 61,438.77 = 13,257.59 : x
  2. Step 2: Convert to fraction form
    40,959.59/61,438.77 = 13,257.59/x
  3. Step 3: Cross multiply
    40,959.59x = 61,438.77 × 13,257.59
  4. Step 4: Simplify right side
    40,959.59x = 814,529,715.57
  5. Step 5: Solve for x
    x = 814,529,715.57/40,959.59
  6. Step 6: Final answer
    x = 19,886.18

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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.