Home / 31,347.78-47,037.83-20,825.07

Finding the Fourth Proportional to 31,347.78, 47,037.83 and 20,825.07

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Solution

The fourth proportional to 31,347.78, 47,037.83 and 20,825.07 is: 31,248.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,347.78 : 47,037.83 = 20,825.07 : x
  2. Step 2: Convert to fraction form
    31,347.78/47,037.83 = 20,825.07/x
  3. Step 3: Cross multiply
    31,347.78x = 47,037.83 × 20,825.07
  4. Step 4: Simplify right side
    31,347.78x = 979,566,102.40
  5. Step 5: Solve for x
    x = 979,566,102.40/31,347.78
  6. Step 6: Final answer
    x = 31,248.34

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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.