Home / 12,907.02-17,812.40-7,243.56

Finding the Fourth Proportional to 12,907.02, 17,812.40 and 7,243.56

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Solution

The fourth proportional to 12,907.02, 17,812.40 and 7,243.56 is: 9,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.02 : 17,812.40 = 7,243.56 : x
  2. Step 2: Convert to fraction form
    12,907.02/17,812.40 = 7,243.56/x
  3. Step 3: Cross multiply
    12,907.02x = 17,812.40 × 7,243.56
  4. Step 4: Simplify right side
    12,907.02x = 129,025,188.14
  5. Step 5: Solve for x
    x = 129,025,188.14/12,907.02
  6. Step 6: Final answer
    x = 9,996.51

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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.