Home / 35,140.41-48,488.99-20,990.25

Finding the Fourth Proportional to 35,140.41, 48,488.99 and 20,990.25

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Solution

The fourth proportional to 35,140.41, 48,488.99 and 20,990.25 is: 28,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,140.41 : 48,488.99 = 20,990.25 : x
  2. Step 2: Convert to fraction form
    35,140.41/48,488.99 = 20,990.25/x
  3. Step 3: Cross multiply
    35,140.41x = 48,488.99 × 20,990.25
  4. Step 4: Simplify right side
    35,140.41x = 1,017,795,917.40
  5. Step 5: Solve for x
    x = 1,017,795,917.40/35,140.41
  6. Step 6: Final answer
    x = 28,963.69

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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.