Home / 11,254.40-16,870.80-8,754.20

Finding the Fourth Proportional to 11,254.40, 16,870.80 and 8,754.20

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Solution

The fourth proportional to 11,254.40, 16,870.80 and 8,754.20 is: 13,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,254.40 : 16,870.80 = 8,754.20 : x
  2. Step 2: Convert to fraction form
    11,254.40/16,870.80 = 8,754.20/x
  3. Step 3: Cross multiply
    11,254.40x = 16,870.80 × 8,754.20
  4. Step 4: Simplify right side
    11,254.40x = 147,690,357.36
  5. Step 5: Solve for x
    x = 147,690,357.36/11,254.40
  6. Step 6: Final answer
    x = 13,122.90

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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.