Home / 13,278.71-19,930.38-6,709.51

Finding the Fourth Proportional to 13,278.71, 19,930.38 and 6,709.51

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Solution

The fourth proportional to 13,278.71, 19,930.38 and 6,709.51 is: 10,070.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.71 : 19,930.38 = 6,709.51 : x
  2. Step 2: Convert to fraction form
    13,278.71/19,930.38 = 6,709.51/x
  3. Step 3: Cross multiply
    13,278.71x = 19,930.38 × 6,709.51
  4. Step 4: Simplify right side
    13,278.71x = 133,722,950.71
  5. Step 5: Solve for x
    x = 133,722,950.71/13,278.71
  6. Step 6: Final answer
    x = 10,070.48

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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.