Home / 28,976.04-39,989.16-16,402.68

Finding the Fourth Proportional to 28,976.04, 39,989.16 and 16,402.68

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Solution

The fourth proportional to 28,976.04, 39,989.16 and 16,402.68 is: 22,636.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.04 : 39,989.16 = 16,402.68 : x
  2. Step 2: Convert to fraction form
    28,976.04/39,989.16 = 16,402.68/x
  3. Step 3: Cross multiply
    28,976.04x = 39,989.16 × 16,402.68
  4. Step 4: Simplify right side
    28,976.04x = 655,929,394.95
  5. Step 5: Solve for x
    x = 655,929,394.95/28,976.04
  6. Step 6: Final answer
    x = 22,636.96

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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.