Home / 13,278.59-19,930.21-6,709.39

Finding the Fourth Proportional to 13,278.59, 19,930.21 and 6,709.39

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Solution

The fourth proportional to 13,278.59, 19,930.21 and 6,709.39 is: 10,070.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.59 : 19,930.21 = 6,709.39 : x
  2. Step 2: Convert to fraction form
    13,278.59/19,930.21 = 6,709.39/x
  3. Step 3: Cross multiply
    13,278.59x = 19,930.21 × 6,709.39
  4. Step 4: Simplify right side
    13,278.59x = 133,719,551.67
  5. Step 5: Solve for x
    x = 133,719,551.67/13,278.59
  6. Step 6: Final answer
    x = 10,070.31

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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.