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Finding the Fourth Proportional to 11,487.30, 15,853.94 and 7,010.10

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Solution

The fourth proportional to 11,487.30, 15,853.94 and 7,010.10 is: 9,674.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.30 : 15,853.94 = 7,010.10 : x
  2. Step 2: Convert to fraction form
    11,487.30/15,853.94 = 7,010.10/x
  3. Step 3: Cross multiply
    11,487.30x = 15,853.94 × 7,010.10
  4. Step 4: Simplify right side
    11,487.30x = 111,137,696.03
  5. Step 5: Solve for x
    x = 111,137,696.03/11,487.30
  6. Step 6: Final answer
    x = 9,674.84

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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.