Home / 10,766.40-16,149.60-6,875.20

Finding the Fourth Proportional to 10,766.40, 16,149.60 and 6,875.20

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Solution

The fourth proportional to 10,766.40, 16,149.60 and 6,875.20 is: 10,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,766.40 : 16,149.60 = 6,875.20 : x
  2. Step 2: Convert to fraction form
    10,766.40/16,149.60 = 6,875.20/x
  3. Step 3: Cross multiply
    10,766.40x = 16,149.60 × 6,875.20
  4. Step 4: Simplify right side
    10,766.40x = 111,031,729.92
  5. Step 5: Solve for x
    x = 111,031,729.92/10,766.40
  6. Step 6: Final answer
    x = 10,312.80

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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.