Home / 15,304.82-21,120.18-8,590.28

Finding the Fourth Proportional to 15,304.82, 21,120.18 and 8,590.28

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Solution

The fourth proportional to 15,304.82, 21,120.18 and 8,590.28 is: 11,854.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.82 : 21,120.18 = 8,590.28 : x
  2. Step 2: Convert to fraction form
    15,304.82/21,120.18 = 8,590.28/x
  3. Step 3: Cross multiply
    15,304.82x = 21,120.18 × 8,590.28
  4. Step 4: Simplify right side
    15,304.82x = 181,428,259.85
  5. Step 5: Solve for x
    x = 181,428,259.85/15,304.82
  6. Step 6: Final answer
    x = 11,854.32

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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.