Home / 28,319.12-39,076.07-15,572.82

Finding the Fourth Proportional to 28,319.12, 39,076.07 and 15,572.82

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Solution

The fourth proportional to 28,319.12, 39,076.07 and 15,572.82 is: 21,488.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.12 : 39,076.07 = 15,572.82 : x
  2. Step 2: Convert to fraction form
    28,319.12/39,076.07 = 15,572.82/x
  3. Step 3: Cross multiply
    28,319.12x = 39,076.07 × 15,572.82
  4. Step 4: Simplify right side
    28,319.12x = 608,524,526.55
  5. Step 5: Solve for x
    x = 608,524,526.55/28,319.12
  6. Step 6: Final answer
    x = 21,488.12

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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.