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Finding the Fourth Proportional to 10,812.12, 14,889.14 and 10,356.90

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Solution

The fourth proportional to 10,812.12, 14,889.14 and 10,356.90 is: 14,262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.12 : 14,889.14 = 10,356.90 : x
  2. Step 2: Convert to fraction form
    10,812.12/14,889.14 = 10,356.90/x
  3. Step 3: Cross multiply
    10,812.12x = 14,889.14 × 10,356.90
  4. Step 4: Simplify right side
    10,812.12x = 154,205,334.07
  5. Step 5: Solve for x
    x = 154,205,334.07/10,812.12
  6. Step 6: Final answer
    x = 14,262.27

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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.