Home / 30,675.71-42,330.54-17,246.78

Finding the Fourth Proportional to 30,675.71, 42,330.54 and 17,246.78

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Solution

The fourth proportional to 30,675.71, 42,330.54 and 17,246.78 is: 23,799.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,675.71 : 42,330.54 = 17,246.78 : x
  2. Step 2: Convert to fraction form
    30,675.71/42,330.54 = 17,246.78/x
  3. Step 3: Cross multiply
    30,675.71x = 42,330.54 × 17,246.78
  4. Step 4: Simplify right side
    30,675.71x = 730,065,510.66
  5. Step 5: Solve for x
    x = 730,065,510.66/30,675.71
  6. Step 6: Final answer
    x = 23,799.47

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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.