Home / 10,755.20-16,132.80-6,370.40

Finding the Fourth Proportional to 10,755.20, 16,132.80 and 6,370.40

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Solution

The fourth proportional to 10,755.20, 16,132.80 and 6,370.40 is: 9,555.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,755.20 : 16,132.80 = 6,370.40 : x
  2. Step 2: Convert to fraction form
    10,755.20/16,132.80 = 6,370.40/x
  3. Step 3: Cross multiply
    10,755.20x = 16,132.80 × 6,370.40
  4. Step 4: Simplify right side
    10,755.20x = 102,772,389.12
  5. Step 5: Solve for x
    x = 102,772,389.12/10,755.20
  6. Step 6: Final answer
    x = 9,555.60

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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.