Home / 39,805.74-54,931.92-21,901.91

Finding the Fourth Proportional to 39,805.74, 54,931.92 and 21,901.91

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Solution

The fourth proportional to 39,805.74, 54,931.92 and 21,901.91 is: 30,224.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,805.74 : 54,931.92 = 21,901.91 : x
  2. Step 2: Convert to fraction form
    39,805.74/54,931.92 = 21,901.91/x
  3. Step 3: Cross multiply
    39,805.74x = 54,931.92 × 21,901.91
  4. Step 4: Simplify right side
    39,805.74x = 1,203,113,693.31
  5. Step 5: Solve for x
    x = 1,203,113,693.31/39,805.74
  6. Step 6: Final answer
    x = 30,224.63

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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.