Home / 15,002.81-20,705.09-8,289.03

Finding the Fourth Proportional to 15,002.81, 20,705.09 and 8,289.03

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Solution

The fourth proportional to 15,002.81, 20,705.09 and 8,289.03 is: 11,439.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.81 : 20,705.09 = 8,289.03 : x
  2. Step 2: Convert to fraction form
    15,002.81/20,705.09 = 8,289.03/x
  3. Step 3: Cross multiply
    15,002.81x = 20,705.09 × 8,289.03
  4. Step 4: Simplify right side
    15,002.81x = 171,625,112.16
  5. Step 5: Solve for x
    x = 171,625,112.16/15,002.81
  6. Step 6: Final answer
    x = 11,439.53

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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.