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Finding the Fourth Proportional to 17,322.72, 23,904 and 9,870.72

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Solution

The fourth proportional to 17,322.72, 23,904 and 9,870.72 is: 13,620.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,322.72 : 23,904 = 9,870.72 : x
  2. Step 2: Convert to fraction form
    17,322.72/23,904 = 9,870.72/x
  3. Step 3: Cross multiply
    17,322.72x = 23,904 × 9,870.72
  4. Step 4: Simplify right side
    17,322.72x = 235,949,690.88
  5. Step 5: Solve for x
    x = 235,949,690.88/17,322.72
  6. Step 6: Final answer
    x = 13,620.82

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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.