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Finding the Fourth Proportional to 12,763.16, 19,148.78 and 6,916.58

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Solution

The fourth proportional to 12,763.16, 19,148.78 and 6,916.58 is: 10,377.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,763.16 : 19,148.78 = 6,916.58 : x
  2. Step 2: Convert to fraction form
    12,763.16/19,148.78 = 6,916.58/x
  3. Step 3: Cross multiply
    12,763.16x = 19,148.78 × 6,916.58
  4. Step 4: Simplify right side
    12,763.16x = 132,443,990.32
  5. Step 5: Solve for x
    x = 132,443,990.32/12,763.16
  6. Step 6: Final answer
    x = 10,377.06

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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.