Home / 21,425.31-32,158.75-10,339.81

Finding the Fourth Proportional to 21,425.31, 32,158.75 and 10,339.81

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Solution

The fourth proportional to 21,425.31, 32,158.75 and 10,339.81 is: 15,519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.31 : 32,158.75 = 10,339.81 : x
  2. Step 2: Convert to fraction form
    21,425.31/32,158.75 = 10,339.81/x
  3. Step 3: Cross multiply
    21,425.31x = 32,158.75 × 10,339.81
  4. Step 4: Simplify right side
    21,425.31x = 332,515,364.84
  5. Step 5: Solve for x
    x = 332,515,364.84/21,425.31
  6. Step 6: Final answer
    x = 15,519.75

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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.