Home / 40,881.28-61,330.76-12,415.89

Finding the Fourth Proportional to 40,881.28, 61,330.76 and 12,415.89

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Solution

The fourth proportional to 40,881.28, 61,330.76 and 12,415.89 is: 18,626.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,881.28 : 61,330.76 = 12,415.89 : x
  2. Step 2: Convert to fraction form
    40,881.28/61,330.76 = 12,415.89/x
  3. Step 3: Cross multiply
    40,881.28x = 61,330.76 × 12,415.89
  4. Step 4: Simplify right side
    40,881.28x = 761,475,969.78
  5. Step 5: Solve for x
    x = 761,475,969.78/40,881.28
  6. Step 6: Final answer
    x = 18,626.52

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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.