Home / 13,055.45-18,012.23-7,389.63

Finding the Fourth Proportional to 13,055.45, 18,012.23 and 7,389.63

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Solution

The fourth proportional to 13,055.45, 18,012.23 and 7,389.63 is: 10,195.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.45 : 18,012.23 = 7,389.63 : x
  2. Step 2: Convert to fraction form
    13,055.45/18,012.23 = 7,389.63/x
  3. Step 3: Cross multiply
    13,055.45x = 18,012.23 × 7,389.63
  4. Step 4: Simplify right side
    13,055.45x = 133,103,723.26
  5. Step 5: Solve for x
    x = 133,103,723.26/13,055.45
  6. Step 6: Final answer
    x = 10,195.26

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Double scale
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Similar ratio
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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.