Home / 13,242.34-18,286.13-9,009.12

Finding the Fourth Proportional to 13,242.34, 18,286.13 and 9,009.12

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Solution

The fourth proportional to 13,242.34, 18,286.13 and 9,009.12 is: 12,440.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.34 : 18,286.13 = 9,009.12 : x
  2. Step 2: Convert to fraction form
    13,242.34/18,286.13 = 9,009.12/x
  3. Step 3: Cross multiply
    13,242.34x = 18,286.13 × 9,009.12
  4. Step 4: Simplify right side
    13,242.34x = 164,742,005.26
  5. Step 5: Solve for x
    x = 164,742,005.26/13,242.34
  6. Step 6: Final answer
    x = 12,440.56

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Half scale
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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.