Home / 25,739.70-35,521.06-15,129.50

Finding the Fourth Proportional to 25,739.70, 35,521.06 and 15,129.50

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Solution

The fourth proportional to 25,739.70, 35,521.06 and 15,129.50 is: 20,878.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,739.70 : 35,521.06 = 15,129.50 : x
  2. Step 2: Convert to fraction form
    25,739.70/35,521.06 = 15,129.50/x
  3. Step 3: Cross multiply
    25,739.70x = 35,521.06 × 15,129.50
  4. Step 4: Simplify right side
    25,739.70x = 537,415,877.27
  5. Step 5: Solve for x
    x = 537,415,877.27/25,739.70
  6. Step 6: Final answer
    x = 20,878.87

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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.