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Finding the Fourth Proportional to 12,590.81, 17,376.16 and 8,334.54

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Solution

The fourth proportional to 12,590.81, 17,376.16 and 8,334.54 is: 11,502.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.81 : 17,376.16 = 8,334.54 : x
  2. Step 2: Convert to fraction form
    12,590.81/17,376.16 = 8,334.54/x
  3. Step 3: Cross multiply
    12,590.81x = 17,376.16 × 8,334.54
  4. Step 4: Simplify right side
    12,590.81x = 144,822,300.57
  5. Step 5: Solve for x
    x = 144,822,300.57/12,590.81
  6. Step 6: Final answer
    x = 11,502.22

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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.