Home / 20,332.02-28,043.34-13,605.78

Finding the Fourth Proportional to 20,332.02, 28,043.34 and 13,605.78

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Solution

The fourth proportional to 20,332.02, 28,043.34 and 13,605.78 is: 18,766.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.02 : 28,043.34 = 13,605.78 : x
  2. Step 2: Convert to fraction form
    20,332.02/28,043.34 = 13,605.78/x
  3. Step 3: Cross multiply
    20,332.02x = 28,043.34 × 13,605.78
  4. Step 4: Simplify right side
    20,332.02x = 381,551,514.51
  5. Step 5: Solve for x
    x = 381,551,514.51/20,332.02
  6. Step 6: Final answer
    x = 18,766.04

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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.