Home / 21,971.52-30,316.32-13,025.76

Finding the Fourth Proportional to 21,971.52, 30,316.32 and 13,025.76

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Solution

The fourth proportional to 21,971.52, 30,316.32 and 13,025.76 is: 17,972.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.52 : 30,316.32 = 13,025.76 : x
  2. Step 2: Convert to fraction form
    21,971.52/30,316.32 = 13,025.76/x
  3. Step 3: Cross multiply
    21,971.52x = 30,316.32 × 13,025.76
  4. Step 4: Simplify right side
    21,971.52x = 394,893,108.40
  5. Step 5: Solve for x
    x = 394,893,108.40/21,971.52
  6. Step 6: Final answer
    x = 17,972.95

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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.