Home / 30,660.16-42,313.28-17,231.36

Finding the Fourth Proportional to 30,660.16, 42,313.28 and 17,231.36

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Solution

The fourth proportional to 30,660.16, 42,313.28 and 17,231.36 is: 23,780.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660.16 : 42,313.28 = 17,231.36 : x
  2. Step 2: Convert to fraction form
    30,660.16/42,313.28 = 17,231.36/x
  3. Step 3: Cross multiply
    30,660.16x = 42,313.28 × 17,231.36
  4. Step 4: Simplify right side
    30,660.16x = 729,115,360.46
  5. Step 5: Solve for x
    x = 729,115,360.46/30,660.16
  6. Step 6: Final answer
    x = 23,780.55

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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.