Home / 39,872.58-55,024.31-21,967.20

Finding the Fourth Proportional to 39,872.58, 55,024.31 and 21,967.20

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Solution

The fourth proportional to 39,872.58, 55,024.31 and 21,967.20 is: 30,314.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872.58 : 55,024.31 = 21,967.20 : x
  2. Step 2: Convert to fraction form
    39,872.58/55,024.31 = 21,967.20/x
  3. Step 3: Cross multiply
    39,872.58x = 55,024.31 × 21,967.20
  4. Step 4: Simplify right side
    39,872.58x = 1,208,730,077.55
  5. Step 5: Solve for x
    x = 1,208,730,077.55/39,872.58
  6. Step 6: Final answer
    x = 30,314.82

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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.