Home / 20,392.39-30,587.10-9,151.21

Finding the Fourth Proportional to 20,392.39, 30,587.10 and 9,151.21

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Solution

The fourth proportional to 20,392.39, 30,587.10 and 9,151.21 is: 13,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.39 : 30,587.10 = 9,151.21 : x
  2. Step 2: Convert to fraction form
    20,392.39/30,587.10 = 9,151.21/x
  3. Step 3: Cross multiply
    20,392.39x = 30,587.10 × 9,151.21
  4. Step 4: Simplify right side
    20,392.39x = 279,908,975.39
  5. Step 5: Solve for x
    x = 279,908,975.39/20,392.39
  6. Step 6: Final answer
    x = 13,726.15

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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.