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Finding the Fourth Proportional to 16,910.40, 23,330.40 and 9,835.20

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Solution

The fourth proportional to 16,910.40, 23,330.40 and 9,835.20 is: 13,569.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,910.40 : 23,330.40 = 9,835.20 : x
  2. Step 2: Convert to fraction form
    16,910.40/23,330.40 = 9,835.20/x
  3. Step 3: Cross multiply
    16,910.40x = 23,330.40 × 9,835.20
  4. Step 4: Simplify right side
    16,910.40x = 229,459,150.08
  5. Step 5: Solve for x
    x = 229,459,150.08/16,910.40
  6. Step 6: Final answer
    x = 13,569.11

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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.