Home / 21,956.15-30,316.95-20,276.94

Finding the Fourth Proportional to 21,956.15, 30,316.95 and 20,276.94

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Solution

The fourth proportional to 21,956.15, 30,316.95 and 20,276.94 is: 27,998.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.15 : 30,316.95 = 20,276.94 : x
  2. Step 2: Convert to fraction form
    21,956.15/30,316.95 = 20,276.94/x
  3. Step 3: Cross multiply
    21,956.15x = 30,316.95 × 20,276.94
  4. Step 4: Simplify right side
    21,956.15x = 614,734,976.13
  5. Step 5: Solve for x
    x = 614,734,976.13/21,956.15
  6. Step 6: Final answer
    x = 27,998.31

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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.