Home / 40,639.79-60,961.73-12,939.95

Finding the Fourth Proportional to 40,639.79, 60,961.73 and 12,939.95

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Solution

The fourth proportional to 40,639.79, 60,961.73 and 12,939.95 is: 19,410.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,639.79 : 60,961.73 = 12,939.95 : x
  2. Step 2: Convert to fraction form
    40,639.79/60,961.73 = 12,939.95/x
  3. Step 3: Cross multiply
    40,639.79x = 60,961.73 × 12,939.95
  4. Step 4: Simplify right side
    40,639.79x = 788,841,890.52
  5. Step 5: Solve for x
    x = 788,841,890.52/40,639.79
  6. Step 6: Final answer
    x = 19,410.58

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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.