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Finding the Fourth Proportional to 12,888.99, 19,306.62 and 10,376.64

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Solution

The fourth proportional to 12,888.99, 19,306.62 and 10,376.64 is: 15,543.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.99 : 19,306.62 = 10,376.64 : x
  2. Step 2: Convert to fraction form
    12,888.99/19,306.62 = 10,376.64/x
  3. Step 3: Cross multiply
    12,888.99x = 19,306.62 × 10,376.64
  4. Step 4: Simplify right side
    12,888.99x = 200,337,845.36
  5. Step 5: Solve for x
    x = 200,337,845.36/12,888.99
  6. Step 6: Final answer
    x = 15,543.33

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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.