Home / 13,039.48-18,002.28-8,570.71

Finding the Fourth Proportional to 13,039.48, 18,002.28 and 8,570.71

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Solution

The fourth proportional to 13,039.48, 18,002.28 and 8,570.71 is: 11,832.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,039.48 : 18,002.28 = 8,570.71 : x
  2. Step 2: Convert to fraction form
    13,039.48/18,002.28 = 8,570.71/x
  3. Step 3: Cross multiply
    13,039.48x = 18,002.28 × 8,570.71
  4. Step 4: Simplify right side
    13,039.48x = 154,292,321.22
  5. Step 5: Solve for x
    x = 154,292,321.22/13,039.48
  6. Step 6: Final answer
    x = 11,832.71

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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.