Home / 30,652.82-42,288.63-19,319.30

Finding the Fourth Proportional to 30,652.82, 42,288.63 and 19,319.30

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Solution

The fourth proportional to 30,652.82, 42,288.63 and 19,319.30 is: 26,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,652.82 : 42,288.63 = 19,319.30 : x
  2. Step 2: Convert to fraction form
    30,652.82/42,288.63 = 19,319.30/x
  3. Step 3: Cross multiply
    30,652.82x = 42,288.63 × 19,319.30
  4. Step 4: Simplify right side
    30,652.82x = 816,986,518.12
  5. Step 5: Solve for x
    x = 816,986,518.12/30,652.82
  6. Step 6: Final answer
    x = 26,652.90

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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.