Home / 20,439.02-30,641.81-10,581.11

Finding the Fourth Proportional to 20,439.02, 30,641.81 and 10,581.11

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Solution

The fourth proportional to 20,439.02, 30,641.81 and 10,581.11 is: 15,863.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.02 : 30,641.81 = 10,581.11 : x
  2. Step 2: Convert to fraction form
    20,439.02/30,641.81 = 10,581.11/x
  3. Step 3: Cross multiply
    20,439.02x = 30,641.81 × 10,581.11
  4. Step 4: Simplify right side
    20,439.02x = 324,224,156.09
  5. Step 5: Solve for x
    x = 324,224,156.09/20,439.02
  6. Step 6: Final answer
    x = 15,863.00

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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.