Home / 28,976.72-39,985.18-16,401.47

Finding the Fourth Proportional to 28,976.72, 39,985.18 and 16,401.47

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Solution

The fourth proportional to 28,976.72, 39,985.18 and 16,401.47 is: 22,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.72 : 39,985.18 = 16,401.47 : x
  2. Step 2: Convert to fraction form
    28,976.72/39,985.18 = 16,401.47/x
  3. Step 3: Cross multiply
    28,976.72x = 39,985.18 × 16,401.47
  4. Step 4: Simplify right side
    28,976.72x = 655,815,489.29
  5. Step 5: Solve for x
    x = 655,815,489.29/28,976.72
  6. Step 6: Final answer
    x = 22,632.50

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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.