Home / 25,139.90-37,737.58-21,239.40

Finding the Fourth Proportional to 25,139.90, 37,737.58 and 21,239.40

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Solution

The fourth proportional to 25,139.90, 37,737.58 and 21,239.40 is: 31,882.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,139.90 : 37,737.58 = 21,239.40 : x
  2. Step 2: Convert to fraction form
    25,139.90/37,737.58 = 21,239.40/x
  3. Step 3: Cross multiply
    25,139.90x = 37,737.58 × 21,239.40
  4. Step 4: Simplify right side
    25,139.90x = 801,523,556.65
  5. Step 5: Solve for x
    x = 801,523,556.65/25,139.90
  6. Step 6: Final answer
    x = 31,882.53

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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.