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Finding the Fourth Proportional to 12,492.52, 17,238.90 and 10,989.16

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Solution

The fourth proportional to 12,492.52, 17,238.90 and 10,989.16 is: 15,164.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.52 : 17,238.90 = 10,989.16 : x
  2. Step 2: Convert to fraction form
    12,492.52/17,238.90 = 10,989.16/x
  3. Step 3: Cross multiply
    12,492.52x = 17,238.90 × 10,989.16
  4. Step 4: Simplify right side
    12,492.52x = 189,441,030.32
  5. Step 5: Solve for x
    x = 189,441,030.32/12,492.52
  6. Step 6: Final answer
    x = 15,164.36

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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.