Home / 28,987.20-40,002.16-16,412.48

Finding the Fourth Proportional to 28,987.20, 40,002.16 and 16,412.48

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Solution

The fourth proportional to 28,987.20, 40,002.16 and 16,412.48 is: 22,649.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.20 : 40,002.16 = 16,412.48 : x
  2. Step 2: Convert to fraction form
    28,987.20/40,002.16 = 16,412.48/x
  3. Step 3: Cross multiply
    28,987.20x = 40,002.16 × 16,412.48
  4. Step 4: Simplify right side
    28,987.20x = 656,534,650.96
  5. Step 5: Solve for x
    x = 656,534,650.96/28,987.20
  6. Step 6: Final answer
    x = 22,649.12

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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.