Home / 12,857.28-19,278.98-6,937.34

Finding the Fourth Proportional to 12,857.28, 19,278.98 and 6,937.34

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Solution

The fourth proportional to 12,857.28, 19,278.98 and 6,937.34 is: 10,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.28 : 19,278.98 = 6,937.34 : x
  2. Step 2: Convert to fraction form
    12,857.28/19,278.98 = 6,937.34/x
  3. Step 3: Cross multiply
    12,857.28x = 19,278.98 × 6,937.34
  4. Step 4: Simplify right side
    12,857.28x = 133,744,839.11
  5. Step 5: Solve for x
    x = 133,744,839.11/12,857.28
  6. Step 6: Final answer
    x = 10,402.27

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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.