Home / 25,859.02-38,790.76-7,139.06

Finding the Fourth Proportional to 25,859.02, 38,790.76 and 7,139.06

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Solution

The fourth proportional to 25,859.02, 38,790.76 and 7,139.06 is: 10,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,859.02 : 38,790.76 = 7,139.06 : x
  2. Step 2: Convert to fraction form
    25,859.02/38,790.76 = 7,139.06/x
  3. Step 3: Cross multiply
    25,859.02x = 38,790.76 × 7,139.06
  4. Step 4: Simplify right side
    25,859.02x = 276,929,563.09
  5. Step 5: Solve for x
    x = 276,929,563.09/25,859.02
  6. Step 6: Final answer
    x = 10,709.21

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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.