Home / 21,913.52-30,265.80-15,971.72

Finding the Fourth Proportional to 21,913.52, 30,265.80 and 15,971.72

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Solution

The fourth proportional to 21,913.52, 30,265.80 and 15,971.72 is: 22,059.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.52 : 30,265.80 = 15,971.72 : x
  2. Step 2: Convert to fraction form
    21,913.52/30,265.80 = 15,971.72/x
  3. Step 3: Cross multiply
    21,913.52x = 30,265.80 × 15,971.72
  4. Step 4: Simplify right side
    21,913.52x = 483,396,883.18
  5. Step 5: Solve for x
    x = 483,396,883.18/21,913.52
  6. Step 6: Final answer
    x = 22,059.30

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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.