Home / 13,331.22-18,397.23-7,668.78

Finding the Fourth Proportional to 13,331.22, 18,397.23 and 7,668.78

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Solution

The fourth proportional to 13,331.22, 18,397.23 and 7,668.78 is: 10,583.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.22 : 18,397.23 = 7,668.78 : x
  2. Step 2: Convert to fraction form
    13,331.22/18,397.23 = 7,668.78/x
  3. Step 3: Cross multiply
    13,331.22x = 18,397.23 × 7,668.78
  4. Step 4: Simplify right side
    13,331.22x = 141,084,309.48
  5. Step 5: Solve for x
    x = 141,084,309.48/13,331.22
  6. Step 6: Final answer
    x = 10,583.00

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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.