Home / 25,439.88-38,166.28-7,909.86

Finding the Fourth Proportional to 25,439.88, 38,166.28 and 7,909.86

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Solution

The fourth proportional to 25,439.88, 38,166.28 and 7,909.86 is: 11,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,439.88 : 38,166.28 = 7,909.86 : x
  2. Step 2: Convert to fraction form
    25,439.88/38,166.28 = 7,909.86/x
  3. Step 3: Cross multiply
    25,439.88x = 38,166.28 × 7,909.86
  4. Step 4: Simplify right side
    25,439.88x = 301,889,931.52
  5. Step 5: Solve for x
    x = 301,889,931.52/25,439.88
  6. Step 6: Final answer
    x = 11,866.80

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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.