Home / 28,574.54-42,871.91-12,778.18

Finding the Fourth Proportional to 28,574.54, 42,871.91 and 12,778.18

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Solution

The fourth proportional to 28,574.54, 42,871.91 and 12,778.18 is: 19,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.54 : 42,871.91 = 12,778.18 : x
  2. Step 2: Convert to fraction form
    28,574.54/42,871.91 = 12,778.18/x
  3. Step 3: Cross multiply
    28,574.54x = 42,871.91 × 12,778.18
  4. Step 4: Simplify right side
    28,574.54x = 547,824,982.92
  5. Step 5: Solve for x
    x = 547,824,982.92/28,574.54
  6. Step 6: Final answer
    x = 19,171.79

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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.