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Finding the Fourth Proportional to 11,143, 15,377.34 and 6,175

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Solution

The fourth proportional to 11,143, 15,377.34 and 6,175 is: 8,521.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143 : 15,377.34 = 6,175 : x
  2. Step 2: Convert to fraction form
    11,143/15,377.34 = 6,175/x
  3. Step 3: Cross multiply
    11,143x = 15,377.34 × 6,175
  4. Step 4: Simplify right side
    11,143x = 94,955,074.50
  5. Step 5: Solve for x
    x = 94,955,074.50/11,143
  6. Step 6: Final answer
    x = 8,521.50

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Double scale
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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.