Home / 39,630.32-54,690.52-21,724.18

Finding the Fourth Proportional to 39,630.32, 54,690.52 and 21,724.18

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Solution

The fourth proportional to 39,630.32, 54,690.52 and 21,724.18 is: 29,979.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.32 : 54,690.52 = 21,724.18 : x
  2. Step 2: Convert to fraction form
    39,630.32/54,690.52 = 21,724.18/x
  3. Step 3: Cross multiply
    39,630.32x = 54,690.52 × 21,724.18
  4. Step 4: Simplify right side
    39,630.32x = 1,188,106,700.77
  5. Step 5: Solve for x
    x = 1,188,106,700.77/39,630.32
  6. Step 6: Final answer
    x = 29,979.74

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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.