Home / 20,854.14-28,781.64-13,298.06

Finding the Fourth Proportional to 20,854.14, 28,781.64 and 13,298.06

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Solution

The fourth proportional to 20,854.14, 28,781.64 and 13,298.06 is: 18,353.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.14 : 28,781.64 = 13,298.06 : x
  2. Step 2: Convert to fraction form
    20,854.14/28,781.64 = 13,298.06/x
  3. Step 3: Cross multiply
    20,854.14x = 28,781.64 × 13,298.06
  4. Step 4: Simplify right side
    20,854.14x = 382,739,831.71
  5. Step 5: Solve for x
    x = 382,739,831.71/20,854.14
  6. Step 6: Final answer
    x = 18,353.18

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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.