Home / 20,246.16-30,397.14-13,990.68

Finding the Fourth Proportional to 20,246.16, 30,397.14 and 13,990.68

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Solution

The fourth proportional to 20,246.16, 30,397.14 and 13,990.68 is: 21,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.16 : 30,397.14 = 13,990.68 : x
  2. Step 2: Convert to fraction form
    20,246.16/30,397.14 = 13,990.68/x
  3. Step 3: Cross multiply
    20,246.16x = 30,397.14 × 13,990.68
  4. Step 4: Simplify right side
    20,246.16x = 425,276,658.66
  5. Step 5: Solve for x
    x = 425,276,658.66/20,246.16
  6. Step 6: Final answer
    x = 21,005.30

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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.