Home / 12,531.36-18,799.20-4,212.18

Finding the Fourth Proportional to 12,531.36, 18,799.20 and 4,212.18

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Solution

The fourth proportional to 12,531.36, 18,799.20 and 4,212.18 is: 6,319.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.36 : 18,799.20 = 4,212.18 : x
  2. Step 2: Convert to fraction form
    12,531.36/18,799.20 = 4,212.18/x
  3. Step 3: Cross multiply
    12,531.36x = 18,799.20 × 4,212.18
  4. Step 4: Simplify right side
    12,531.36x = 79,185,614.26
  5. Step 5: Solve for x
    x = 79,185,614.26/12,531.36
  6. Step 6: Final answer
    x = 6,319.00

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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.