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Finding the Fourth Proportional to 15,900.84, 21,943.44 and 8,827.65

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Solution

The fourth proportional to 15,900.84, 21,943.44 and 8,827.65 is: 12,182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.84 : 21,943.44 = 8,827.65 : x
  2. Step 2: Convert to fraction form
    15,900.84/21,943.44 = 8,827.65/x
  3. Step 3: Cross multiply
    15,900.84x = 21,943.44 × 8,827.65
  4. Step 4: Simplify right side
    15,900.84x = 193,709,008.12
  5. Step 5: Solve for x
    x = 193,709,008.12/15,900.84
  6. Step 6: Final answer
    x = 12,182.31

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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.