Home / 31,748.92-43,812.84-18,319.12

Finding the Fourth Proportional to 31,748.92, 43,812.84 and 18,319.12

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Solution

The fourth proportional to 31,748.92, 43,812.84 and 18,319.12 is: 25,280.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,748.92 : 43,812.84 = 18,319.12 : x
  2. Step 2: Convert to fraction form
    31,748.92/43,812.84 = 18,319.12/x
  3. Step 3: Cross multiply
    31,748.92x = 43,812.84 × 18,319.12
  4. Step 4: Simplify right side
    31,748.92x = 802,612,673.50
  5. Step 5: Solve for x
    x = 802,612,673.50/31,748.92
  6. Step 6: Final answer
    x = 25,280.00

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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.