Home / 15,338.35-21,160-9,669.16

Finding the Fourth Proportional to 15,338.35, 21,160 and 9,669.16

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Solution

The fourth proportional to 15,338.35, 21,160 and 9,669.16 is: 13,339.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.35 : 21,160 = 9,669.16 : x
  2. Step 2: Convert to fraction form
    15,338.35/21,160 = 9,669.16/x
  3. Step 3: Cross multiply
    15,338.35x = 21,160 × 9,669.16
  4. Step 4: Simplify right side
    15,338.35x = 204,599,425.60
  5. Step 5: Solve for x
    x = 204,599,425.60/15,338.35
  6. Step 6: Final answer
    x = 13,339.08

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Double scale
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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.