Home / 18,280.08-25,239.60-13,253.76

Finding the Fourth Proportional to 18,280.08, 25,239.60 and 13,253.76

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Solution

The fourth proportional to 18,280.08, 25,239.60 and 13,253.76 is: 18,299.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,280.08 : 25,239.60 = 13,253.76 : x
  2. Step 2: Convert to fraction form
    18,280.08/25,239.60 = 13,253.76/x
  3. Step 3: Cross multiply
    18,280.08x = 25,239.60 × 13,253.76
  4. Step 4: Simplify right side
    18,280.08x = 334,519,600.90
  5. Step 5: Solve for x
    x = 334,519,600.90/18,280.08
  6. Step 6: Final answer
    x = 18,299.68

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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.