Home / 28,113.64-38,795.38-15,535.96

Finding the Fourth Proportional to 28,113.64, 38,795.38 and 15,535.96

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Solution

The fourth proportional to 28,113.64, 38,795.38 and 15,535.96 is: 21,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.64 : 38,795.38 = 15,535.96 : x
  2. Step 2: Convert to fraction form
    28,113.64/38,795.38 = 15,535.96/x
  3. Step 3: Cross multiply
    28,113.64x = 38,795.38 × 15,535.96
  4. Step 4: Simplify right side
    28,113.64x = 602,723,471.86
  5. Step 5: Solve for x
    x = 602,723,471.86/28,113.64
  6. Step 6: Final answer
    x = 21,438.83

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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.