Home / 13,280.92-18,320.02-8,304.28

Finding the Fourth Proportional to 13,280.92, 18,320.02 and 8,304.28

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Solution

The fourth proportional to 13,280.92, 18,320.02 and 8,304.28 is: 11,455.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.92 : 18,320.02 = 8,304.28 : x
  2. Step 2: Convert to fraction form
    13,280.92/18,320.02 = 8,304.28/x
  3. Step 3: Cross multiply
    13,280.92x = 18,320.02 × 8,304.28
  4. Step 4: Simplify right side
    13,280.92x = 152,134,575.69
  5. Step 5: Solve for x
    x = 152,134,575.69/13,280.92
  6. Step 6: Final answer
    x = 11,455.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.