Home / 30,710.96-42,386.92-19,231.20

Finding the Fourth Proportional to 30,710.96, 42,386.92 and 19,231.20

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Solution

The fourth proportional to 30,710.96, 42,386.92 and 19,231.20 is: 26,542.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,710.96 : 42,386.92 = 19,231.20 : x
  2. Step 2: Convert to fraction form
    30,710.96/42,386.92 = 19,231.20/x
  3. Step 3: Cross multiply
    30,710.96x = 42,386.92 × 19,231.20
  4. Step 4: Simplify right side
    30,710.96x = 815,151,335.90
  5. Step 5: Solve for x
    x = 815,151,335.90/30,710.96
  6. Step 6: Final answer
    x = 26,542.68

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Double scale
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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.