Home / 22,685.04-31,298.13-13,729.68

Finding the Fourth Proportional to 22,685.04, 31,298.13 and 13,729.68

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Solution

The fourth proportional to 22,685.04, 31,298.13 and 13,729.68 is: 18,942.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,685.04 : 31,298.13 = 13,729.68 : x
  2. Step 2: Convert to fraction form
    22,685.04/31,298.13 = 13,729.68/x
  3. Step 3: Cross multiply
    22,685.04x = 31,298.13 × 13,729.68
  4. Step 4: Simplify right side
    22,685.04x = 429,713,309.50
  5. Step 5: Solve for x
    x = 429,713,309.50/22,685.04
  6. Step 6: Final answer
    x = 18,942.59

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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.