Home / 20,656.80-28,561.68-18,032.40

Finding the Fourth Proportional to 20,656.80, 28,561.68 and 18,032.40

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Solution

The fourth proportional to 20,656.80, 28,561.68 and 18,032.40 is: 24,932.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.80 : 28,561.68 = 18,032.40 : x
  2. Step 2: Convert to fraction form
    20,656.80/28,561.68 = 18,032.40/x
  3. Step 3: Cross multiply
    20,656.80x = 28,561.68 × 18,032.40
  4. Step 4: Simplify right side
    20,656.80x = 515,035,638.43
  5. Step 5: Solve for x
    x = 515,035,638.43/20,656.80
  6. Step 6: Final answer
    x = 24,932.98

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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.