Home / 13,190.51-18,203.23-7,222.16

Finding the Fourth Proportional to 13,190.51, 18,203.23 and 7,222.16

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Solution

The fourth proportional to 13,190.51, 18,203.23 and 7,222.16 is: 9,966.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.51 : 18,203.23 = 7,222.16 : x
  2. Step 2: Convert to fraction form
    13,190.51/18,203.23 = 7,222.16/x
  3. Step 3: Cross multiply
    13,190.51x = 18,203.23 × 7,222.16
  4. Step 4: Simplify right side
    13,190.51x = 131,466,694.11
  5. Step 5: Solve for x
    x = 131,466,694.11/13,190.51
  6. Step 6: Final answer
    x = 9,966.76

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Half scale
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Double scale
Find fourth proportional to 13,191.51, 18,204.61 and 7,223.16
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.