Home / 20,764.04-31,141.49-9,660.15

Finding the Fourth Proportional to 20,764.04, 31,141.49 and 9,660.15

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Solution

The fourth proportional to 20,764.04, 31,141.49 and 9,660.15 is: 14,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.04 : 31,141.49 = 9,660.15 : x
  2. Step 2: Convert to fraction form
    20,764.04/31,141.49 = 9,660.15/x
  3. Step 3: Cross multiply
    20,764.04x = 31,141.49 × 9,660.15
  4. Step 4: Simplify right side
    20,764.04x = 300,831,416.32
  5. Step 5: Solve for x
    x = 300,831,416.32/20,764.04
  6. Step 6: Final answer
    x = 14,488.10

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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.