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Finding the Fourth Proportional to 12,907.13, 17,810.80 and 7,241.10

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Solution

The fourth proportional to 12,907.13, 17,810.80 and 7,241.10 is: 9,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.13 : 17,810.80 = 7,241.10 : x
  2. Step 2: Convert to fraction form
    12,907.13/17,810.80 = 7,241.10/x
  3. Step 3: Cross multiply
    12,907.13x = 17,810.80 × 7,241.10
  4. Step 4: Simplify right side
    12,907.13x = 128,969,709.17
  5. Step 5: Solve for x
    x = 128,969,709.17/12,907.13
  6. Step 6: Final answer
    x = 9,992.13

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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.