Home / 22,770.86-31,425.40-12,699.98

Finding the Fourth Proportional to 22,770.86, 31,425.40 and 12,699.98

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Solution

The fourth proportional to 22,770.86, 31,425.40 and 12,699.98 is: 17,526.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,770.86 : 31,425.40 = 12,699.98 : x
  2. Step 2: Convert to fraction form
    22,770.86/31,425.40 = 12,699.98/x
  3. Step 3: Cross multiply
    22,770.86x = 31,425.40 × 12,699.98
  4. Step 4: Simplify right side
    22,770.86x = 399,101,951.49
  5. Step 5: Solve for x
    x = 399,101,951.49/22,770.86
  6. Step 6: Final answer
    x = 17,526.87

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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.