Home / 20,436.28-28,203.70-11,484.20

Finding the Fourth Proportional to 20,436.28, 28,203.70 and 11,484.20

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Solution

The fourth proportional to 20,436.28, 28,203.70 and 11,484.20 is: 15,849.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.28 : 28,203.70 = 11,484.20 : x
  2. Step 2: Convert to fraction form
    20,436.28/28,203.70 = 11,484.20/x
  3. Step 3: Cross multiply
    20,436.28x = 28,203.70 × 11,484.20
  4. Step 4: Simplify right side
    20,436.28x = 323,896,931.54
  5. Step 5: Solve for x
    x = 323,896,931.54/20,436.28
  6. Step 6: Final answer
    x = 15,849.11

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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.