Home / 10,977.80-15,156.60-8,455.46

Finding the Fourth Proportional to 10,977.80, 15,156.60 and 8,455.46

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Solution

The fourth proportional to 10,977.80, 15,156.60 and 8,455.46 is: 11,674.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,977.80 : 15,156.60 = 8,455.46 : x
  2. Step 2: Convert to fraction form
    10,977.80/15,156.60 = 8,455.46/x
  3. Step 3: Cross multiply
    10,977.80x = 15,156.60 × 8,455.46
  4. Step 4: Simplify right side
    10,977.80x = 128,156,025.04
  5. Step 5: Solve for x
    x = 128,156,025.04/10,977.80
  6. Step 6: Final answer
    x = 11,674.11

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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.