Home / 28,587.20-39,437.04-18,519.03

Finding the Fourth Proportional to 28,587.20, 39,437.04 and 18,519.03

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Solution

The fourth proportional to 28,587.20, 39,437.04 and 18,519.03 is: 25,547.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.20 : 39,437.04 = 18,519.03 : x
  2. Step 2: Convert to fraction form
    28,587.20/39,437.04 = 18,519.03/x
  3. Step 3: Cross multiply
    28,587.20x = 39,437.04 × 18,519.03
  4. Step 4: Simplify right side
    28,587.20x = 730,335,796.32
  5. Step 5: Solve for x
    x = 730,335,796.32/28,587.20
  6. Step 6: Final answer
    x = 25,547.66

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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.