Home / 10,972.40-16,458.60-5,426.60

Finding the Fourth Proportional to 10,972.40, 16,458.60 and 5,426.60

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Solution

The fourth proportional to 10,972.40, 16,458.60 and 5,426.60 is: 8,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.40 : 16,458.60 = 5,426.60 : x
  2. Step 2: Convert to fraction form
    10,972.40/16,458.60 = 5,426.60/x
  3. Step 3: Cross multiply
    10,972.40x = 16,458.60 × 5,426.60
  4. Step 4: Simplify right side
    10,972.40x = 89,314,238.76
  5. Step 5: Solve for x
    x = 89,314,238.76/10,972.40
  6. Step 6: Final answer
    x = 8,139.90

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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.