Home / 51,228.90-76,846.14-13,789.80

Finding the Fourth Proportional to 51,228.90, 76,846.14 and 13,789.80

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Solution

The fourth proportional to 51,228.90, 76,846.14 and 13,789.80 is: 20,685.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,228.90 : 76,846.14 = 13,789.80 : x
  2. Step 2: Convert to fraction form
    51,228.90/76,846.14 = 13,789.80/x
  3. Step 3: Cross multiply
    51,228.90x = 76,846.14 × 13,789.80
  4. Step 4: Simplify right side
    51,228.90x = 1,059,692,901.37
  5. Step 5: Solve for x
    x = 1,059,692,901.37/51,228.90
  6. Step 6: Final answer
    x = 20,685.45

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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.