Home / 20,129.08-30,154.32-13,182.52

Finding the Fourth Proportional to 20,129.08, 30,154.32 and 13,182.52

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Solution

The fourth proportional to 20,129.08, 30,154.32 and 13,182.52 is: 19,748.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.08 : 30,154.32 = 13,182.52 : x
  2. Step 2: Convert to fraction form
    20,129.08/30,154.32 = 13,182.52/x
  3. Step 3: Cross multiply
    20,129.08x = 30,154.32 × 13,182.52
  4. Step 4: Simplify right side
    20,129.08x = 397,509,926.49
  5. Step 5: Solve for x
    x = 397,509,926.49/20,129.08
  6. Step 6: Final answer
    x = 19,748.04

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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.