Home / 30,711.96-42,388.30-19,232.20

Finding the Fourth Proportional to 30,711.96, 42,388.30 and 19,232.20

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Solution

The fourth proportional to 30,711.96, 42,388.30 and 19,232.20 is: 26,544.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,711.96 : 42,388.30 = 19,232.20 : x
  2. Step 2: Convert to fraction form
    30,711.96/42,388.30 = 19,232.20/x
  3. Step 3: Cross multiply
    30,711.96x = 42,388.30 × 19,232.20
  4. Step 4: Simplify right side
    30,711.96x = 815,220,263.26
  5. Step 5: Solve for x
    x = 815,220,263.26/30,711.96
  6. Step 6: Final answer
    x = 26,544.07

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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.