Home / 10,947.12-16,415.80-3,154.08

Finding the Fourth Proportional to 10,947.12, 16,415.80 and 3,154.08

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Solution

The fourth proportional to 10,947.12, 16,415.80 and 3,154.08 is: 4,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,947.12 : 16,415.80 = 3,154.08 : x
  2. Step 2: Convert to fraction form
    10,947.12/16,415.80 = 3,154.08/x
  3. Step 3: Cross multiply
    10,947.12x = 16,415.80 × 3,154.08
  4. Step 4: Simplify right side
    10,947.12x = 51,776,746.46
  5. Step 5: Solve for x
    x = 51,776,746.46/10,947.12
  6. Step 6: Final answer
    x = 4,729.71

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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.