Home / 25,981.32-38,920.71-13,509.48

Finding the Fourth Proportional to 25,981.32, 38,920.71 and 13,509.48

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Solution

The fourth proportional to 25,981.32, 38,920.71 and 13,509.48 is: 20,237.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.32 : 38,920.71 = 13,509.48 : x
  2. Step 2: Convert to fraction form
    25,981.32/38,920.71 = 13,509.48/x
  3. Step 3: Cross multiply
    25,981.32x = 38,920.71 × 13,509.48
  4. Step 4: Simplify right side
    25,981.32x = 525,798,553.33
  5. Step 5: Solve for x
    x = 525,798,553.33/25,981.32
  6. Step 6: Final answer
    x = 20,237.56

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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.