Home / 20,925.30-28,801.80-18,931.62

Finding the Fourth Proportional to 20,925.30, 28,801.80 and 18,931.62

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Solution

The fourth proportional to 20,925.30, 28,801.80 and 18,931.62 is: 26,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.30 : 28,801.80 = 18,931.62 : x
  2. Step 2: Convert to fraction form
    20,925.30/28,801.80 = 18,931.62/x
  3. Step 3: Cross multiply
    20,925.30x = 28,801.80 × 18,931.62
  4. Step 4: Simplify right side
    20,925.30x = 545,264,732.92
  5. Step 5: Solve for x
    x = 545,264,732.92/20,925.30
  6. Step 6: Final answer
    x = 26,057.68

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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.