Home / 30,779.80-42,475.38-17,351.08

Finding the Fourth Proportional to 30,779.80, 42,475.38 and 17,351.08

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Solution

The fourth proportional to 30,779.80, 42,475.38 and 17,351.08 is: 23,944.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,779.80 : 42,475.38 = 17,351.08 : x
  2. Step 2: Convert to fraction form
    30,779.80/42,475.38 = 17,351.08/x
  3. Step 3: Cross multiply
    30,779.80x = 42,475.38 × 17,351.08
  4. Step 4: Simplify right side
    30,779.80x = 736,993,716.41
  5. Step 5: Solve for x
    x = 736,993,716.41/30,779.80
  6. Step 6: Final answer
    x = 23,944.07

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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.