Home / 15,843.98-21,861.00-10,818.66

Finding the Fourth Proportional to 15,843.98, 21,861.00 and 10,818.66

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Solution

The fourth proportional to 15,843.98, 21,861.00 and 10,818.66 is: 14,927.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,843.98 : 21,861.00 = 10,818.66 : x
  2. Step 2: Convert to fraction form
    15,843.98/21,861.00 = 10,818.66/x
  3. Step 3: Cross multiply
    15,843.98x = 21,861.00 × 10,818.66
  4. Step 4: Simplify right side
    15,843.98x = 236,506,823.45
  5. Step 5: Solve for x
    x = 236,506,823.45/15,843.98
  6. Step 6: Final answer
    x = 14,927.24

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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.