Home / 28,821.12-39,773.18-15,573.12

Finding the Fourth Proportional to 28,821.12, 39,773.18 and 15,573.12

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Solution

The fourth proportional to 28,821.12, 39,773.18 and 15,573.12 is: 21,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.12 : 39,773.18 = 15,573.12 : x
  2. Step 2: Convert to fraction form
    28,821.12/39,773.18 = 15,573.12/x
  3. Step 3: Cross multiply
    28,821.12x = 39,773.18 × 15,573.12
  4. Step 4: Simplify right side
    28,821.12x = 619,392,504.92
  5. Step 5: Solve for x
    x = 619,392,504.92/28,821.12
  6. Step 6: Final answer
    x = 21,490.92

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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.