Home / 15,225.65-21,013.35-8,512.66

Finding the Fourth Proportional to 15,225.65, 21,013.35 and 8,512.66

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Solution

The fourth proportional to 15,225.65, 21,013.35 and 8,512.66 is: 11,748.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,225.65 : 21,013.35 = 8,512.66 : x
  2. Step 2: Convert to fraction form
    15,225.65/21,013.35 = 8,512.66/x
  3. Step 3: Cross multiply
    15,225.65x = 21,013.35 × 8,512.66
  4. Step 4: Simplify right side
    15,225.65x = 178,879,398.94
  5. Step 5: Solve for x
    x = 178,879,398.94/15,225.65
  6. Step 6: Final answer
    x = 11,748.56

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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.