Home / 20,759.63-31,139.15-9,660.11

Finding the Fourth Proportional to 20,759.63, 31,139.15 and 9,660.11

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Solution

The fourth proportional to 20,759.63, 31,139.15 and 9,660.11 is: 14,490.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.63 : 31,139.15 = 9,660.11 : x
  2. Step 2: Convert to fraction form
    20,759.63/31,139.15 = 9,660.11/x
  3. Step 3: Cross multiply
    20,759.63x = 31,139.15 × 9,660.11
  4. Step 4: Simplify right side
    20,759.63x = 300,807,410.31
  5. Step 5: Solve for x
    x = 300,807,410.31/20,759.63
  6. Step 6: Final answer
    x = 14,490.02

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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.