Home / 28,422.90-39,217.23-17,088.66

Finding the Fourth Proportional to 28,422.90, 39,217.23 and 17,088.66

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Solution

The fourth proportional to 28,422.90, 39,217.23 and 17,088.66 is: 23,578.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.90 : 39,217.23 = 17,088.66 : x
  2. Step 2: Convert to fraction form
    28,422.90/39,217.23 = 17,088.66/x
  3. Step 3: Cross multiply
    28,422.90x = 39,217.23 × 17,088.66
  4. Step 4: Simplify right side
    28,422.90x = 670,169,909.61
  5. Step 5: Solve for x
    x = 670,169,909.61/28,422.90
  6. Step 6: Final answer
    x = 23,578.52

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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.