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Finding the Fourth Proportional to 15,827.88, 21,841.00 and 8,754.15

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Solution

The fourth proportional to 15,827.88, 21,841.00 and 8,754.15 is: 12,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,827.88 : 21,841.00 = 8,754.15 : x
  2. Step 2: Convert to fraction form
    15,827.88/21,841.00 = 8,754.15/x
  3. Step 3: Cross multiply
    15,827.88x = 21,841.00 × 8,754.15
  4. Step 4: Simplify right side
    15,827.88x = 191,199,319.19
  5. Step 5: Solve for x
    x = 191,199,319.19/15,827.88
  6. Step 6: Final answer
    x = 12,079.91

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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.