Home / 12,240.18-18,312.21-9,445.74

Finding the Fourth Proportional to 12,240.18, 18,312.21 and 9,445.74

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Solution

The fourth proportional to 12,240.18, 18,312.21 and 9,445.74 is: 14,131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.18 : 18,312.21 = 9,445.74 : x
  2. Step 2: Convert to fraction form
    12,240.18/18,312.21 = 9,445.74/x
  3. Step 3: Cross multiply
    12,240.18x = 18,312.21 × 9,445.74
  4. Step 4: Simplify right side
    12,240.18x = 172,972,374.49
  5. Step 5: Solve for x
    x = 172,972,374.49/12,240.18
  6. Step 6: Final answer
    x = 14,131.52

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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.