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Finding the Fourth Proportional to 21,956.81, 32,935.22 and 10,278.23

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Solution

The fourth proportional to 21,956.81, 32,935.22 and 10,278.23 is: 15,417.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.81 : 32,935.22 = 10,278.23 : x
  2. Step 2: Convert to fraction form
    21,956.81/32,935.22 = 10,278.23/x
  3. Step 3: Cross multiply
    21,956.81x = 32,935.22 × 10,278.23
  4. Step 4: Simplify right side
    21,956.81x = 338,515,550.19
  5. Step 5: Solve for x
    x = 338,515,550.19/21,956.81
  6. Step 6: Final answer
    x = 15,417.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.