Home / 12,574.12-18,862.10-3,809.72

Finding the Fourth Proportional to 12,574.12, 18,862.10 and 3,809.72

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Solution

The fourth proportional to 12,574.12, 18,862.10 and 3,809.72 is: 5,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574.12 : 18,862.10 = 3,809.72 : x
  2. Step 2: Convert to fraction form
    12,574.12/18,862.10 = 3,809.72/x
  3. Step 3: Cross multiply
    12,574.12x = 18,862.10 × 3,809.72
  4. Step 4: Simplify right side
    12,574.12x = 71,859,319.61
  5. Step 5: Solve for x
    x = 71,859,319.61/12,574.12
  6. Step 6: Final answer
    x = 5,714.86

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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.