Home / 25,935.30-38,905.65-7,215.39

Finding the Fourth Proportional to 25,935.30, 38,905.65 and 7,215.39

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Solution

The fourth proportional to 25,935.30, 38,905.65 and 7,215.39 is: 10,823.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,935.30 : 38,905.65 = 7,215.39 : x
  2. Step 2: Convert to fraction form
    25,935.30/38,905.65 = 7,215.39/x
  3. Step 3: Cross multiply
    25,935.30x = 38,905.65 × 7,215.39
  4. Step 4: Simplify right side
    25,935.30x = 280,719,437.95
  5. Step 5: Solve for x
    x = 280,719,437.95/25,935.30
  6. Step 6: Final answer
    x = 10,823.84

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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.