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Finding the Fourth Proportional to 12,915.62, 19,333.18 and 9,946.36

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Solution

The fourth proportional to 12,915.62, 19,333.18 and 9,946.36 is: 14,888.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.62 : 19,333.18 = 9,946.36 : x
  2. Step 2: Convert to fraction form
    12,915.62/19,333.18 = 9,946.36/x
  3. Step 3: Cross multiply
    12,915.62x = 19,333.18 × 9,946.36
  4. Step 4: Simplify right side
    12,915.62x = 192,294,804.82
  5. Step 5: Solve for x
    x = 192,294,804.82/12,915.62
  6. Step 6: Final answer
    x = 14,888.55

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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.