Home / 20,419.08-28,176.28-12,463.28

Finding the Fourth Proportional to 20,419.08, 28,176.28 and 12,463.28

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Solution

The fourth proportional to 20,419.08, 28,176.28 and 12,463.28 is: 17,198.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.08 : 28,176.28 = 12,463.28 : x
  2. Step 2: Convert to fraction form
    20,419.08/28,176.28 = 12,463.28/x
  3. Step 3: Cross multiply
    20,419.08x = 28,176.28 × 12,463.28
  4. Step 4: Simplify right side
    20,419.08x = 351,168,867.00
  5. Step 5: Solve for x
    x = 351,168,867.00/20,419.08
  6. Step 6: Final answer
    x = 17,198.07

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1.5x scale

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.