Home / 20,100.59-30,127.90-9,555.65

Finding the Fourth Proportional to 20,100.59, 30,127.90 and 9,555.65

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Solution

The fourth proportional to 20,100.59, 30,127.90 and 9,555.65 is: 14,322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.59 : 30,127.90 = 9,555.65 : x
  2. Step 2: Convert to fraction form
    20,100.59/30,127.90 = 9,555.65/x
  3. Step 3: Cross multiply
    20,100.59x = 30,127.90 × 9,555.65
  4. Step 4: Simplify right side
    20,100.59x = 287,891,667.64
  5. Step 5: Solve for x
    x = 287,891,667.64/20,100.59
  6. Step 6: Final answer
    x = 14,322.55

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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.