Home / 30,224.40-45,331.20-19,111.20

Finding the Fourth Proportional to 30,224.40, 45,331.20 and 19,111.20

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Solution

The fourth proportional to 30,224.40, 45,331.20 and 19,111.20 is: 28,663.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,224.40 : 45,331.20 = 19,111.20 : x
  2. Step 2: Convert to fraction form
    30,224.40/45,331.20 = 19,111.20/x
  3. Step 3: Cross multiply
    30,224.40x = 45,331.20 × 19,111.20
  4. Step 4: Simplify right side
    30,224.40x = 866,333,629.44
  5. Step 5: Solve for x
    x = 866,333,629.44/30,224.40
  6. Step 6: Final answer
    x = 28,663.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.