Home / 15,981.39-22,054.08-8,907.78

Finding the Fourth Proportional to 15,981.39, 22,054.08 and 8,907.78

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Solution

The fourth proportional to 15,981.39, 22,054.08 and 8,907.78 is: 12,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.39 : 22,054.08 = 8,907.78 : x
  2. Step 2: Convert to fraction form
    15,981.39/22,054.08 = 8,907.78/x
  3. Step 3: Cross multiply
    15,981.39x = 22,054.08 × 8,907.78
  4. Step 4: Simplify right side
    15,981.39x = 196,452,892.74
  5. Step 5: Solve for x
    x = 196,452,892.74/15,981.39
  6. Step 6: Final answer
    x = 12,292.60

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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.