Home / 20,925.95-28,877.72-11,494.31

Finding the Fourth Proportional to 20,925.95, 28,877.72 and 11,494.31

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Solution

The fourth proportional to 20,925.95, 28,877.72 and 11,494.31 is: 15,862.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.95 : 28,877.72 = 11,494.31 : x
  2. Step 2: Convert to fraction form
    20,925.95/28,877.72 = 11,494.31/x
  3. Step 3: Cross multiply
    20,925.95x = 28,877.72 × 11,494.31
  4. Step 4: Simplify right side
    20,925.95x = 331,929,263.91
  5. Step 5: Solve for x
    x = 331,929,263.91/20,925.95
  6. Step 6: Final answer
    x = 15,862.09

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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.