Home / 28,358.32-39,132.16-16,422.44

Finding the Fourth Proportional to 28,358.32, 39,132.16 and 16,422.44

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Solution

The fourth proportional to 28,358.32, 39,132.16 and 16,422.44 is: 22,661.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.32 : 39,132.16 = 16,422.44 : x
  2. Step 2: Convert to fraction form
    28,358.32/39,132.16 = 16,422.44/x
  3. Step 3: Cross multiply
    28,358.32x = 39,132.16 × 16,422.44
  4. Step 4: Simplify right side
    28,358.32x = 642,645,549.67
  5. Step 5: Solve for x
    x = 642,645,549.67/28,358.32
  6. Step 6: Final answer
    x = 22,661.62

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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.