Home / 20,189.40-30,284.10-14,612.55

Finding the Fourth Proportional to 20,189.40, 30,284.10 and 14,612.55

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Solution

The fourth proportional to 20,189.40, 30,284.10 and 14,612.55 is: 21,918.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.40 : 30,284.10 = 14,612.55 : x
  2. Step 2: Convert to fraction form
    20,189.40/30,284.10 = 14,612.55/x
  3. Step 3: Cross multiply
    20,189.40x = 30,284.10 × 14,612.55
  4. Step 4: Simplify right side
    20,189.40x = 442,527,925.46
  5. Step 5: Solve for x
    x = 442,527,925.46/20,189.40
  6. Step 6: Final answer
    x = 21,918.83

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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.