Home / 13,220.10-18,227.70-9,677.16

Finding the Fourth Proportional to 13,220.10, 18,227.70 and 9,677.16

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Solution

The fourth proportional to 13,220.10, 18,227.70 and 9,677.16 is: 13,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.10 : 18,227.70 = 9,677.16 : x
  2. Step 2: Convert to fraction form
    13,220.10/18,227.70 = 9,677.16/x
  3. Step 3: Cross multiply
    13,220.10x = 18,227.70 × 9,677.16
  4. Step 4: Simplify right side
    13,220.10x = 176,392,369.33
  5. Step 5: Solve for x
    x = 176,392,369.33/13,220.10
  6. Step 6: Final answer
    x = 13,342.74

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Half scale
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Double scale
Find fourth proportional to 13,221.10, 18,229.08 and 9,678.16
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.