Home / 28,987.88-40,003.31-16,415.06

Finding the Fourth Proportional to 28,987.88, 40,003.31 and 16,415.06

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Solution

The fourth proportional to 28,987.88, 40,003.31 and 16,415.06 is: 22,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.88 : 40,003.31 = 16,415.06 : x
  2. Step 2: Convert to fraction form
    28,987.88/40,003.31 = 16,415.06/x
  3. Step 3: Cross multiply
    28,987.88x = 40,003.31 × 16,415.06
  4. Step 4: Simplify right side
    28,987.88x = 656,656,574.87
  5. Step 5: Solve for x
    x = 656,656,574.87/28,987.88
  6. Step 6: Final answer
    x = 22,652.80

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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.