Home / 39,756.29-54,864.69-21,851.75

Finding the Fourth Proportional to 39,756.29, 54,864.69 and 21,851.75

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Solution

The fourth proportional to 39,756.29, 54,864.69 and 21,851.75 is: 30,155.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.29 : 54,864.69 = 21,851.75 : x
  2. Step 2: Convert to fraction form
    39,756.29/54,864.69 = 21,851.75/x
  3. Step 3: Cross multiply
    39,756.29x = 54,864.69 × 21,851.75
  4. Step 4: Simplify right side
    39,756.29x = 1,198,889,489.71
  5. Step 5: Solve for x
    x = 1,198,889,489.71/39,756.29
  6. Step 6: Final answer
    x = 30,155.97

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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.