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Finding the Fourth Proportional to 13,010.69, 17,954.75 and 7,421.69

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Solution

The fourth proportional to 13,010.69, 17,954.75 and 7,421.69 is: 10,241.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,010.69 : 17,954.75 = 7,421.69 : x
  2. Step 2: Convert to fraction form
    13,010.69/17,954.75 = 7,421.69/x
  3. Step 3: Cross multiply
    13,010.69x = 17,954.75 × 7,421.69
  4. Step 4: Simplify right side
    13,010.69x = 133,254,588.53
  5. Step 5: Solve for x
    x = 133,254,588.53/13,010.69
  6. Step 6: Final answer
    x = 10,241.93

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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.