Home / 12,575.25-18,862.29-3,690.21

Finding the Fourth Proportional to 12,575.25, 18,862.29 and 3,690.21

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Solution

The fourth proportional to 12,575.25, 18,862.29 and 3,690.21 is: 5,535.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,575.25 : 18,862.29 = 3,690.21 : x
  2. Step 2: Convert to fraction form
    12,575.25/18,862.29 = 3,690.21/x
  3. Step 3: Cross multiply
    12,575.25x = 18,862.29 × 3,690.21
  4. Step 4: Simplify right side
    12,575.25x = 69,605,881.91
  5. Step 5: Solve for x
    x = 69,605,881.91/12,575.25
  6. Step 6: Final answer
    x = 5,535.15

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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.