Home / 20,437.20-28,203.53-11,484.81

Finding the Fourth Proportional to 20,437.20, 28,203.53 and 11,484.81

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Solution

The fourth proportional to 20,437.20, 28,203.53 and 11,484.81 is: 15,849.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.20 : 28,203.53 = 11,484.81 : x
  2. Step 2: Convert to fraction form
    20,437.20/28,203.53 = 11,484.81/x
  3. Step 3: Cross multiply
    20,437.20x = 28,203.53 × 11,484.81
  4. Step 4: Simplify right side
    20,437.20x = 323,912,125.96
  5. Step 5: Solve for x
    x = 323,912,125.96/20,437.20
  6. Step 6: Final answer
    x = 15,849.14

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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.