Home / 15,981.19-22,054.79-8,907.66

Finding the Fourth Proportional to 15,981.19, 22,054.79 and 8,907.66

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Solution

The fourth proportional to 15,981.19, 22,054.79 and 8,907.66 is: 12,292.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.19 : 22,054.79 = 8,907.66 : x
  2. Step 2: Convert to fraction form
    15,981.19/22,054.79 = 8,907.66/x
  3. Step 3: Cross multiply
    15,981.19x = 22,054.79 × 8,907.66
  4. Step 4: Simplify right side
    15,981.19x = 196,456,570.69
  5. Step 5: Solve for x
    x = 196,456,570.69/15,981.19
  6. Step 6: Final answer
    x = 12,292.99

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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.