Home / 15,327.89-21,152.26-8,521.65

Finding the Fourth Proportional to 15,327.89, 21,152.26 and 8,521.65

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Solution

The fourth proportional to 15,327.89, 21,152.26 and 8,521.65 is: 11,759.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.89 : 21,152.26 = 8,521.65 : x
  2. Step 2: Convert to fraction form
    15,327.89/21,152.26 = 8,521.65/x
  3. Step 3: Cross multiply
    15,327.89x = 21,152.26 × 8,521.65
  4. Step 4: Simplify right side
    15,327.89x = 180,252,156.43
  5. Step 5: Solve for x
    x = 180,252,156.43/15,327.89
  6. Step 6: Final answer
    x = 11,759.75

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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.