Home / 15,876.68-21,897.18-10,212.08

Finding the Fourth Proportional to 15,876.68, 21,897.18 and 10,212.08

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Solution

The fourth proportional to 15,876.68, 21,897.18 and 10,212.08 is: 14,084.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.68 : 21,897.18 = 10,212.08 : x
  2. Step 2: Convert to fraction form
    15,876.68/21,897.18 = 10,212.08/x
  3. Step 3: Cross multiply
    15,876.68x = 21,897.18 × 10,212.08
  4. Step 4: Simplify right side
    15,876.68x = 223,615,753.93
  5. Step 5: Solve for x
    x = 223,615,753.93/15,876.68
  6. Step 6: Final answer
    x = 14,084.54

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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.