Home / 10,881.60-16,300.80-7,382.40

Finding the Fourth Proportional to 10,881.60, 16,300.80 and 7,382.40

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Solution

The fourth proportional to 10,881.60, 16,300.80 and 7,382.40 is: 11,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.60 : 16,300.80 = 7,382.40 : x
  2. Step 2: Convert to fraction form
    10,881.60/16,300.80 = 7,382.40/x
  3. Step 3: Cross multiply
    10,881.60x = 16,300.80 × 7,382.40
  4. Step 4: Simplify right side
    10,881.60x = 120,339,025.92
  5. Step 5: Solve for x
    x = 120,339,025.92/10,881.60
  6. Step 6: Final answer
    x = 11,058.95

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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.