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Finding the Fourth Proportional to 15,981.83, 22,054.95 and 8,908.10

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Solution

The fourth proportional to 15,981.83, 22,054.95 and 8,908.10 is: 12,293.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.83 : 22,054.95 = 8,908.10 : x
  2. Step 2: Convert to fraction form
    15,981.83/22,054.95 = 8,908.10/x
  3. Step 3: Cross multiply
    15,981.83x = 22,054.95 × 8,908.10
  4. Step 4: Simplify right side
    15,981.83x = 196,467,700.10
  5. Step 5: Solve for x
    x = 196,467,700.10/15,981.83
  6. Step 6: Final answer
    x = 12,293.19

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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.