Home / 38,915.82-53,710.83-30,517.74

Finding the Fourth Proportional to 38,915.82, 53,710.83 and 30,517.74

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Solution

The fourth proportional to 38,915.82, 53,710.83 and 30,517.74 is: 42,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,915.82 : 53,710.83 = 30,517.74 : x
  2. Step 2: Convert to fraction form
    38,915.82/53,710.83 = 30,517.74/x
  3. Step 3: Cross multiply
    38,915.82x = 53,710.83 × 30,517.74
  4. Step 4: Simplify right side
    38,915.82x = 1,639,133,145.12
  5. Step 5: Solve for x
    x = 1,639,133,145.12/38,915.82
  6. Step 6: Final answer
    x = 42,119.97

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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.