Home / 10,748.80-16,123.20-8,124.40

Finding the Fourth Proportional to 10,748.80, 16,123.20 and 8,124.40

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Solution

The fourth proportional to 10,748.80, 16,123.20 and 8,124.40 is: 12,186.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,748.80 : 16,123.20 = 8,124.40 : x
  2. Step 2: Convert to fraction form
    10,748.80/16,123.20 = 8,124.40/x
  3. Step 3: Cross multiply
    10,748.80x = 16,123.20 × 8,124.40
  4. Step 4: Simplify right side
    10,748.80x = 130,991,326.08
  5. Step 5: Solve for x
    x = 130,991,326.08/10,748.80
  6. Step 6: Final answer
    x = 12,186.60

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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.