Home / 39,767.81-54,880.87-21,864.11

Finding the Fourth Proportional to 39,767.81, 54,880.87 and 21,864.11

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Solution

The fourth proportional to 39,767.81, 54,880.87 and 21,864.11 is: 30,173.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,767.81 : 54,880.87 = 21,864.11 : x
  2. Step 2: Convert to fraction form
    39,767.81/54,880.87 = 21,864.11/x
  3. Step 3: Cross multiply
    39,767.81x = 54,880.87 × 21,864.11
  4. Step 4: Simplify right side
    39,767.81x = 1,199,921,461.12
  5. Step 5: Solve for x
    x = 1,199,921,461.12/39,767.81
  6. Step 6: Final answer
    x = 30,173.18

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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.