Home / 34,285.74-47,329.83-20,139.72

Finding the Fourth Proportional to 34,285.74, 47,329.83 and 20,139.72

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Solution

The fourth proportional to 34,285.74, 47,329.83 and 20,139.72 is: 27,801.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,285.74 : 47,329.83 = 20,139.72 : x
  2. Step 2: Convert to fraction form
    34,285.74/47,329.83 = 20,139.72/x
  3. Step 3: Cross multiply
    34,285.74x = 47,329.83 × 20,139.72
  4. Step 4: Simplify right side
    34,285.74x = 953,209,523.85
  5. Step 5: Solve for x
    x = 953,209,523.85/34,285.74
  6. Step 6: Final answer
    x = 27,801.92

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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.