Home / 39,439.04-54,424.32-21,534.80

Finding the Fourth Proportional to 39,439.04, 54,424.32 and 21,534.80

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Solution

The fourth proportional to 39,439.04, 54,424.32 and 21,534.80 is: 29,717.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.04 : 54,424.32 = 21,534.80 : x
  2. Step 2: Convert to fraction form
    39,439.04/54,424.32 = 21,534.80/x
  3. Step 3: Cross multiply
    39,439.04x = 54,424.32 × 21,534.80
  4. Step 4: Simplify right side
    39,439.04x = 1,172,016,846.34
  5. Step 5: Solve for x
    x = 1,172,016,846.34/39,439.04
  6. Step 6: Final answer
    x = 29,717.17

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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.