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Finding the Fourth Proportional to 12,700.98, 19,017.34 and 10,351.38

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Solution

The fourth proportional to 12,700.98, 19,017.34 and 10,351.38 is: 15,499.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.98 : 19,017.34 = 10,351.38 : x
  2. Step 2: Convert to fraction form
    12,700.98/19,017.34 = 10,351.38/x
  3. Step 3: Cross multiply
    12,700.98x = 19,017.34 × 10,351.38
  4. Step 4: Simplify right side
    12,700.98x = 196,855,712.93
  5. Step 5: Solve for x
    x = 196,855,712.93/12,700.98
  6. Step 6: Final answer
    x = 15,499.25

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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.