Home / 21,856.26-30,159.30-13,360.46

Finding the Fourth Proportional to 21,856.26, 30,159.30 and 13,360.46

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Solution

The fourth proportional to 21,856.26, 30,159.30 and 13,360.46 is: 18,436.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.26 : 30,159.30 = 13,360.46 : x
  2. Step 2: Convert to fraction form
    21,856.26/30,159.30 = 13,360.46/x
  3. Step 3: Cross multiply
    21,856.26x = 30,159.30 × 13,360.46
  4. Step 4: Simplify right side
    21,856.26x = 402,942,121.28
  5. Step 5: Solve for x
    x = 402,942,121.28/21,856.26
  6. Step 6: Final answer
    x = 18,436.01

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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.