Home / 20,888.42-31,296.15-17,400.83

Finding the Fourth Proportional to 20,888.42, 31,296.15 and 17,400.83

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Solution

The fourth proportional to 20,888.42, 31,296.15 and 17,400.83 is: 26,070.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.42 : 31,296.15 = 17,400.83 : x
  2. Step 2: Convert to fraction form
    20,888.42/31,296.15 = 17,400.83/x
  3. Step 3: Cross multiply
    20,888.42x = 31,296.15 × 17,400.83
  4. Step 4: Simplify right side
    20,888.42x = 544,578,985.80
  5. Step 5: Solve for x
    x = 544,578,985.80/20,888.42
  6. Step 6: Final answer
    x = 26,070.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.