Home / 39,411.11-54,386.89-21,506.42

Finding the Fourth Proportional to 39,411.11, 54,386.89 and 21,506.42

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Solution

The fourth proportional to 39,411.11, 54,386.89 and 21,506.42 is: 29,678.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,411.11 : 54,386.89 = 21,506.42 : x
  2. Step 2: Convert to fraction form
    39,411.11/54,386.89 = 21,506.42/x
  3. Step 3: Cross multiply
    39,411.11x = 54,386.89 × 21,506.42
  4. Step 4: Simplify right side
    39,411.11x = 1,169,667,381.03
  5. Step 5: Solve for x
    x = 1,169,667,381.03/39,411.11
  6. Step 6: Final answer
    x = 29,678.62

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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.