Home / 30,717.24-42,389.34-17,979.18

Finding the Fourth Proportional to 30,717.24, 42,389.34 and 17,979.18

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Solution

The fourth proportional to 30,717.24, 42,389.34 and 17,979.18 is: 24,811.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,717.24 : 42,389.34 = 17,979.18 : x
  2. Step 2: Convert to fraction form
    30,717.24/42,389.34 = 17,979.18/x
  3. Step 3: Cross multiply
    30,717.24x = 42,389.34 × 17,979.18
  4. Step 4: Simplify right side
    30,717.24x = 762,125,573.94
  5. Step 5: Solve for x
    x = 762,125,573.94/30,717.24
  6. Step 6: Final answer
    x = 24,811.00

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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.