Home / 13,612.01-18,770.76-12,818.30

Finding the Fourth Proportional to 13,612.01, 18,770.76 and 12,818.30

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Solution

The fourth proportional to 13,612.01, 18,770.76 and 12,818.30 is: 17,676.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.01 : 18,770.76 = 12,818.30 : x
  2. Step 2: Convert to fraction form
    13,612.01/18,770.76 = 12,818.30/x
  3. Step 3: Cross multiply
    13,612.01x = 18,770.76 × 12,818.30
  4. Step 4: Simplify right side
    13,612.01x = 240,609,232.91
  5. Step 5: Solve for x
    x = 240,609,232.91/13,612.01
  6. Step 6: Final answer
    x = 17,676.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.