Home / 15,876.54-21,868.47-11,088.06

Finding the Fourth Proportional to 15,876.54, 21,868.47 and 11,088.06

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Solution

The fourth proportional to 15,876.54, 21,868.47 and 11,088.06 is: 15,272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.54 : 21,868.47 = 11,088.06 : x
  2. Step 2: Convert to fraction form
    15,876.54/21,868.47 = 11,088.06/x
  3. Step 3: Cross multiply
    15,876.54x = 21,868.47 × 11,088.06
  4. Step 4: Simplify right side
    15,876.54x = 242,478,907.47
  5. Step 5: Solve for x
    x = 242,478,907.47/15,876.54
  6. Step 6: Final answer
    x = 15,272.78

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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.