Home / 28,559.06-39,420.04-18,488.18

Finding the Fourth Proportional to 28,559.06, 39,420.04 and 18,488.18

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Solution

The fourth proportional to 28,559.06, 39,420.04 and 18,488.18 is: 25,519.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.06 : 39,420.04 = 18,488.18 : x
  2. Step 2: Convert to fraction form
    28,559.06/39,420.04 = 18,488.18/x
  3. Step 3: Cross multiply
    28,559.06x = 39,420.04 × 18,488.18
  4. Step 4: Simplify right side
    28,559.06x = 728,804,902.15
  5. Step 5: Solve for x
    x = 728,804,902.15/28,559.06
  6. Step 6: Final answer
    x = 25,519.22

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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.