Home / 12,572.12-18,862.50-7,886.48

Finding the Fourth Proportional to 12,572.12, 18,862.50 and 7,886.48

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Solution

The fourth proportional to 12,572.12, 18,862.50 and 7,886.48 is: 11,832.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.12 : 18,862.50 = 7,886.48 : x
  2. Step 2: Convert to fraction form
    12,572.12/18,862.50 = 7,886.48/x
  3. Step 3: Cross multiply
    12,572.12x = 18,862.50 × 7,886.48
  4. Step 4: Simplify right side
    12,572.12x = 148,758,729
  5. Step 5: Solve for x
    x = 148,758,729/12,572.12
  6. Step 6: Final answer
    x = 11,832.43

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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.