Home / 28,005.72-42,007.19-10,474.18

Finding the Fourth Proportional to 28,005.72, 42,007.19 and 10,474.18

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Solution

The fourth proportional to 28,005.72, 42,007.19 and 10,474.18 is: 15,710.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.72 : 42,007.19 = 10,474.18 : x
  2. Step 2: Convert to fraction form
    28,005.72/42,007.19 = 10,474.18/x
  3. Step 3: Cross multiply
    28,005.72x = 42,007.19 × 10,474.18
  4. Step 4: Simplify right side
    28,005.72x = 439,990,711.97
  5. Step 5: Solve for x
    x = 439,990,711.97/28,005.72
  6. Step 6: Final answer
    x = 15,710.75

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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.