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Finding the Fourth Proportional to 17,323.66, 25,975.12 and 8,421.47

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Solution

The fourth proportional to 17,323.66, 25,975.12 and 8,421.47 is: 12,627.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,323.66 : 25,975.12 = 8,421.47 : x
  2. Step 2: Convert to fraction form
    17,323.66/25,975.12 = 8,421.47/x
  3. Step 3: Cross multiply
    17,323.66x = 25,975.12 × 8,421.47
  4. Step 4: Simplify right side
    17,323.66x = 218,748,693.83
  5. Step 5: Solve for x
    x = 218,748,693.83/17,323.66
  6. Step 6: Final answer
    x = 12,627.16

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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.