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Finding the Fourth Proportional to 12,591.55, 17,376.93 and 7,285.34

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Solution

The fourth proportional to 12,591.55, 17,376.93 and 7,285.34 is: 10,054.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.55 : 17,376.93 = 7,285.34 : x
  2. Step 2: Convert to fraction form
    12,591.55/17,376.93 = 7,285.34/x
  3. Step 3: Cross multiply
    12,591.55x = 17,376.93 × 7,285.34
  4. Step 4: Simplify right side
    12,591.55x = 126,596,886.65
  5. Step 5: Solve for x
    x = 126,596,886.65/12,591.55
  6. Step 6: Final answer
    x = 10,054.11

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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.