Home / 28,278.62-39,024.96-15,532.98

Finding the Fourth Proportional to 28,278.62, 39,024.96 and 15,532.98

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Solution

The fourth proportional to 28,278.62, 39,024.96 and 15,532.98 is: 21,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.62 : 39,024.96 = 15,532.98 : x
  2. Step 2: Convert to fraction form
    28,278.62/39,024.96 = 15,532.98/x
  3. Step 3: Cross multiply
    28,278.62x = 39,024.96 × 15,532.98
  4. Step 4: Simplify right side
    28,278.62x = 606,173,703.91
  5. Step 5: Solve for x
    x = 606,173,703.91/28,278.62
  6. Step 6: Final answer
    x = 21,435.76

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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.