Home / 15,921.80-23,847.60-9,979.34

Finding the Fourth Proportional to 15,921.80, 23,847.60 and 9,979.34

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Solution

The fourth proportional to 15,921.80, 23,847.60 and 9,979.34 is: 14,947.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.80 : 23,847.60 = 9,979.34 : x
  2. Step 2: Convert to fraction form
    15,921.80/23,847.60 = 9,979.34/x
  3. Step 3: Cross multiply
    15,921.80x = 23,847.60 × 9,979.34
  4. Step 4: Simplify right side
    15,921.80x = 237,983,308.58
  5. Step 5: Solve for x
    x = 237,983,308.58/15,921.80
  6. Step 6: Final answer
    x = 14,947.01

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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.