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Finding the Fourth Proportional to 11,389.74, 17,095.29 and 7,015.74

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Solution

The fourth proportional to 11,389.74, 17,095.29 and 7,015.74 is: 10,530.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.74 : 17,095.29 = 7,015.74 : x
  2. Step 2: Convert to fraction form
    11,389.74/17,095.29 = 7,015.74/x
  3. Step 3: Cross multiply
    11,389.74x = 17,095.29 × 7,015.74
  4. Step 4: Simplify right side
    11,389.74x = 119,936,109.86
  5. Step 5: Solve for x
    x = 119,936,109.86/11,389.74
  6. Step 6: Final answer
    x = 10,530.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.