Home / 22,779.79-31,439.57-13,825.56

Finding the Fourth Proportional to 22,779.79, 31,439.57 and 13,825.56

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Solution

The fourth proportional to 22,779.79, 31,439.57 and 13,825.56 is: 19,081.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,779.79 : 31,439.57 = 13,825.56 : x
  2. Step 2: Convert to fraction form
    22,779.79/31,439.57 = 13,825.56/x
  3. Step 3: Cross multiply
    22,779.79x = 31,439.57 × 13,825.56
  4. Step 4: Simplify right side
    22,779.79x = 434,669,435.08
  5. Step 5: Solve for x
    x = 434,669,435.08/22,779.79
  6. Step 6: Final answer
    x = 19,081.37

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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.