Home / 25,864.98-38,790.39-7,140.54

Finding the Fourth Proportional to 25,864.98, 38,790.39 and 7,140.54

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Solution

The fourth proportional to 25,864.98, 38,790.39 and 7,140.54 is: 10,708.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,864.98 : 38,790.39 = 7,140.54 : x
  2. Step 2: Convert to fraction form
    25,864.98/38,790.39 = 7,140.54/x
  3. Step 3: Cross multiply
    25,864.98x = 38,790.39 × 7,140.54
  4. Step 4: Simplify right side
    25,864.98x = 276,984,331.41
  5. Step 5: Solve for x
    x = 276,984,331.41/25,864.98
  6. Step 6: Final answer
    x = 10,708.86

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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.