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Finding the Fourth Proportional to 15,095.61, 20,832.48 and 8,381.35

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Solution

The fourth proportional to 15,095.61, 20,832.48 and 8,381.35 is: 11,566.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.61 : 20,832.48 = 8,381.35 : x
  2. Step 2: Convert to fraction form
    15,095.61/20,832.48 = 8,381.35/x
  3. Step 3: Cross multiply
    15,095.61x = 20,832.48 × 8,381.35
  4. Step 4: Simplify right side
    15,095.61x = 174,604,223.04
  5. Step 5: Solve for x
    x = 174,604,223.04/15,095.61
  6. Step 6: Final answer
    x = 11,566.55

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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.