Home / 25,039.78-34,555.31-13,709.09

Finding the Fourth Proportional to 25,039.78, 34,555.31 and 13,709.09

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Solution

The fourth proportional to 25,039.78, 34,555.31 and 13,709.09 is: 18,918.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,039.78 : 34,555.31 = 13,709.09 : x
  2. Step 2: Convert to fraction form
    25,039.78/34,555.31 = 13,709.09/x
  3. Step 3: Cross multiply
    25,039.78x = 34,555.31 × 13,709.09
  4. Step 4: Simplify right side
    25,039.78x = 473,721,854.77
  5. Step 5: Solve for x
    x = 473,721,854.77/25,039.78
  6. Step 6: Final answer
    x = 18,918.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.