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Finding the Fourth Proportional to 15,662.16, 21,617.64 and 10,634.76

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Solution

The fourth proportional to 15,662.16, 21,617.64 and 10,634.76 is: 14,678.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.16 : 21,617.64 = 10,634.76 : x
  2. Step 2: Convert to fraction form
    15,662.16/21,617.64 = 10,634.76/x
  3. Step 3: Cross multiply
    15,662.16x = 21,617.64 × 10,634.76
  4. Step 4: Simplify right side
    15,662.16x = 229,898,413.17
  5. Step 5: Solve for x
    x = 229,898,413.17/15,662.16
  6. Step 6: Final answer
    x = 14,678.59

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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.