Home / 34,639.36-47,789.76-28,378.24

Finding the Fourth Proportional to 34,639.36, 47,789.76 and 28,378.24

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Solution

The fourth proportional to 34,639.36, 47,789.76 and 28,378.24 is: 39,151.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,639.36 : 47,789.76 = 28,378.24 : x
  2. Step 2: Convert to fraction form
    34,639.36/47,789.76 = 28,378.24/x
  3. Step 3: Cross multiply
    34,639.36x = 47,789.76 × 28,378.24
  4. Step 4: Simplify right side
    34,639.36x = 1,356,189,278.82
  5. Step 5: Solve for x
    x = 1,356,189,278.82/34,639.36
  6. Step 6: Final answer
    x = 39,151.68

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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.