Home / 35,415.90-48,876.78-20,309.95

Finding the Fourth Proportional to 35,415.90, 48,876.78 and 20,309.95

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Solution

The fourth proportional to 35,415.90, 48,876.78 and 20,309.95 is: 28,029.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,415.90 : 48,876.78 = 20,309.95 : x
  2. Step 2: Convert to fraction form
    35,415.90/48,876.78 = 20,309.95/x
  3. Step 3: Cross multiply
    35,415.90x = 48,876.78 × 20,309.95
  4. Step 4: Simplify right side
    35,415.90x = 992,684,957.96
  5. Step 5: Solve for x
    x = 992,684,957.96/35,415.90
  6. Step 6: Final answer
    x = 28,029.36

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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.