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Finding the Fourth Proportional to 25,510.68, 38,268.80 and 8,655.86

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Solution

The fourth proportional to 25,510.68, 38,268.80 and 8,655.86 is: 12,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,510.68 : 38,268.80 = 8,655.86 : x
  2. Step 2: Convert to fraction form
    25,510.68/38,268.80 = 8,655.86/x
  3. Step 3: Cross multiply
    25,510.68x = 38,268.80 × 8,655.86
  4. Step 4: Simplify right side
    25,510.68x = 331,249,140.54
  5. Step 5: Solve for x
    x = 331,249,140.54/25,510.68
  6. Step 6: Final answer
    x = 12,984.72

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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.