Home / 18,987.80-28,482.15-5,840.29

Finding the Fourth Proportional to 18,987.80, 28,482.15 and 5,840.29

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Solution

The fourth proportional to 18,987.80, 28,482.15 and 5,840.29 is: 8,760.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.80 : 28,482.15 = 5,840.29 : x
  2. Step 2: Convert to fraction form
    18,987.80/28,482.15 = 5,840.29/x
  3. Step 3: Cross multiply
    18,987.80x = 28,482.15 × 5,840.29
  4. Step 4: Simplify right side
    18,987.80x = 166,344,015.82
  5. Step 5: Solve for x
    x = 166,344,015.82/18,987.80
  6. Step 6: Final answer
    x = 8,760.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.