Home / 12,427.66-18,641.50-8,520.22

Finding the Fourth Proportional to 12,427.66, 18,641.50 and 8,520.22

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Solution

The fourth proportional to 12,427.66, 18,641.50 and 8,520.22 is: 12,780.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.66 : 18,641.50 = 8,520.22 : x
  2. Step 2: Convert to fraction form
    12,427.66/18,641.50 = 8,520.22/x
  3. Step 3: Cross multiply
    12,427.66x = 18,641.50 × 8,520.22
  4. Step 4: Simplify right side
    12,427.66x = 158,829,681.13
  5. Step 5: Solve for x
    x = 158,829,681.13/12,427.66
  6. Step 6: Final answer
    x = 12,780.34

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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.