Home / 15,304.85-21,122.81-8,590.88

Finding the Fourth Proportional to 15,304.85, 21,122.81 and 8,590.88

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Solution

The fourth proportional to 15,304.85, 21,122.81 and 8,590.88 is: 11,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.85 : 21,122.81 = 8,590.88 : x
  2. Step 2: Convert to fraction form
    15,304.85/21,122.81 = 8,590.88/x
  3. Step 3: Cross multiply
    15,304.85x = 21,122.81 × 8,590.88
  4. Step 4: Simplify right side
    15,304.85x = 181,463,377.40
  5. Step 5: Solve for x
    x = 181,463,377.40/15,304.85
  6. Step 6: Final answer
    x = 11,856.60

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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.