Home / 40,283.28-60,428-12,205.66

Finding the Fourth Proportional to 40,283.28, 60,428 and 12,205.66

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Solution

The fourth proportional to 40,283.28, 60,428 and 12,205.66 is: 18,309.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,283.28 : 60,428 = 12,205.66 : x
  2. Step 2: Convert to fraction form
    40,283.28/60,428 = 12,205.66/x
  3. Step 3: Cross multiply
    40,283.28x = 60,428 × 12,205.66
  4. Step 4: Simplify right side
    40,283.28x = 737,563,622.48
  5. Step 5: Solve for x
    x = 737,563,622.48/40,283.28
  6. Step 6: Final answer
    x = 18,309.42

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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.