Home / 28,488.12-42,728.94-7,713.24

Finding the Fourth Proportional to 28,488.12, 42,728.94 and 7,713.24

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Solution

The fourth proportional to 28,488.12, 42,728.94 and 7,713.24 is: 11,568.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.12 : 42,728.94 = 7,713.24 : x
  2. Step 2: Convert to fraction form
    28,488.12/42,728.94 = 7,713.24/x
  3. Step 3: Cross multiply
    28,488.12x = 42,728.94 × 7,713.24
  4. Step 4: Simplify right side
    28,488.12x = 329,578,569.17
  5. Step 5: Solve for x
    x = 329,578,569.17/28,488.12
  6. Step 6: Final answer
    x = 11,568.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.