Home / 34,878.30-48,131.24-20,345.19

Finding the Fourth Proportional to 34,878.30, 48,131.24 and 20,345.19

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Solution

The fourth proportional to 34,878.30, 48,131.24 and 20,345.19 is: 28,075.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,878.30 : 48,131.24 = 20,345.19 : x
  2. Step 2: Convert to fraction form
    34,878.30/48,131.24 = 20,345.19/x
  3. Step 3: Cross multiply
    34,878.30x = 48,131.24 × 20,345.19
  4. Step 4: Simplify right side
    34,878.30x = 979,239,121.01
  5. Step 5: Solve for x
    x = 979,239,121.01/34,878.30
  6. Step 6: Final answer
    x = 28,075.88

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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.