Home / 25,580.08-38,197.50-20,909.21

Finding the Fourth Proportional to 25,580.08, 38,197.50 and 20,909.21

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Solution

The fourth proportional to 25,580.08, 38,197.50 and 20,909.21 is: 31,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,580.08 : 38,197.50 = 20,909.21 : x
  2. Step 2: Convert to fraction form
    25,580.08/38,197.50 = 20,909.21/x
  3. Step 3: Cross multiply
    25,580.08x = 38,197.50 × 20,909.21
  4. Step 4: Simplify right side
    25,580.08x = 798,679,548.98
  5. Step 5: Solve for x
    x = 798,679,548.98/25,580.08
  6. Step 6: Final answer
    x = 31,222.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.