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Finding the Fourth Proportional to 17,322.66, 25,973.62 and 8,420.47

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Solution

The fourth proportional to 17,322.66, 25,973.62 and 8,420.47 is: 12,625.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,322.66 : 25,973.62 = 8,420.47 : x
  2. Step 2: Convert to fraction form
    17,322.66/25,973.62 = 8,420.47/x
  3. Step 3: Cross multiply
    17,322.66x = 25,973.62 × 8,420.47
  4. Step 4: Simplify right side
    17,322.66x = 218,710,002.02
  5. Step 5: Solve for x
    x = 218,710,002.02/17,322.66
  6. Step 6: Final answer
    x = 12,625.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.