Home / 19,999.29-30,006.23-10,640.15

Finding the Fourth Proportional to 19,999.29, 30,006.23 and 10,640.15

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Solution

The fourth proportional to 19,999.29, 30,006.23 and 10,640.15 is: 15,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.29 : 30,006.23 = 10,640.15 : x
  2. Step 2: Convert to fraction form
    19,999.29/30,006.23 = 10,640.15/x
  3. Step 3: Cross multiply
    19,999.29x = 30,006.23 × 10,640.15
  4. Step 4: Simplify right side
    19,999.29x = 319,270,584.90
  5. Step 5: Solve for x
    x = 319,270,584.90/19,999.29
  6. Step 6: Final answer
    x = 15,964.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.