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Finding the Fourth Proportional to 15,894.59, 21,934.49 and 8,821.04

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Solution

The fourth proportional to 15,894.59, 21,934.49 and 8,821.04 is: 12,173.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,894.59 : 21,934.49 = 8,821.04 : x
  2. Step 2: Convert to fraction form
    15,894.59/21,934.49 = 8,821.04/x
  3. Step 3: Cross multiply
    15,894.59x = 21,934.49 × 8,821.04
  4. Step 4: Simplify right side
    15,894.59x = 193,484,859.89
  5. Step 5: Solve for x
    x = 193,484,859.89/15,894.59
  6. Step 6: Final answer
    x = 12,173.00

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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.