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Finding the Fourth Proportional to 16,888.92, 23,307.78 and 9,721.26

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Solution

The fourth proportional to 16,888.92, 23,307.78 and 9,721.26 is: 13,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,888.92 : 23,307.78 = 9,721.26 : x
  2. Step 2: Convert to fraction form
    16,888.92/23,307.78 = 9,721.26/x
  3. Step 3: Cross multiply
    16,888.92x = 23,307.78 × 9,721.26
  4. Step 4: Simplify right side
    16,888.92x = 226,580,989.40
  5. Step 5: Solve for x
    x = 226,580,989.40/16,888.92
  6. Step 6: Final answer
    x = 13,415.95

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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.