Home / 15,473.30-21,353.15-8,399.70

Finding the Fourth Proportional to 15,473.30, 21,353.15 and 8,399.70

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Solution

The fourth proportional to 15,473.30, 21,353.15 and 8,399.70 is: 11,591.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,473.30 : 21,353.15 = 8,399.70 : x
  2. Step 2: Convert to fraction form
    15,473.30/21,353.15 = 8,399.70/x
  3. Step 3: Cross multiply
    15,473.30x = 21,353.15 × 8,399.70
  4. Step 4: Simplify right side
    15,473.30x = 179,360,075.05
  5. Step 5: Solve for x
    x = 179,360,075.05/15,473.30
  6. Step 6: Final answer
    x = 11,591.59

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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.