Home / 25,491.93-35,139.47-20,768.01

Finding the Fourth Proportional to 25,491.93, 35,139.47 and 20,768.01

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Solution

The fourth proportional to 25,491.93, 35,139.47 and 20,768.01 is: 28,627.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,491.93 : 35,139.47 = 20,768.01 : x
  2. Step 2: Convert to fraction form
    25,491.93/35,139.47 = 20,768.01/x
  3. Step 3: Cross multiply
    25,491.93x = 35,139.47 × 20,768.01
  4. Step 4: Simplify right side
    25,491.93x = 729,776,760.51
  5. Step 5: Solve for x
    x = 729,776,760.51/25,491.93
  6. Step 6: Final answer
    x = 28,627.76

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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.