Home / 39,724.32-54,820.02-21,819.75

Finding the Fourth Proportional to 39,724.32, 54,820.02 and 21,819.75

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Solution

The fourth proportional to 39,724.32, 54,820.02 and 21,819.75 is: 30,111.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,724.32 : 54,820.02 = 21,819.75 : x
  2. Step 2: Convert to fraction form
    39,724.32/54,820.02 = 21,819.75/x
  3. Step 3: Cross multiply
    39,724.32x = 54,820.02 × 21,819.75
  4. Step 4: Simplify right side
    39,724.32x = 1,196,159,131.40
  5. Step 5: Solve for x
    x = 1,196,159,131.40/39,724.32
  6. Step 6: Final answer
    x = 30,111.51

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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.