Home / 28,431.04-42,653.12-8,712.48

Finding the Fourth Proportional to 28,431.04, 42,653.12 and 8,712.48

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Solution

The fourth proportional to 28,431.04, 42,653.12 and 8,712.48 is: 13,070.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.04 : 42,653.12 = 8,712.48 : x
  2. Step 2: Convert to fraction form
    28,431.04/42,653.12 = 8,712.48/x
  3. Step 3: Cross multiply
    28,431.04x = 42,653.12 × 8,712.48
  4. Step 4: Simplify right side
    28,431.04x = 371,614,454.94
  5. Step 5: Solve for x
    x = 371,614,454.94/28,431.04
  6. Step 6: Final answer
    x = 13,070.73

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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.