Home / 21,813.30-32,707.80-9,331.20

Finding the Fourth Proportional to 21,813.30, 32,707.80 and 9,331.20

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Solution

The fourth proportional to 21,813.30, 32,707.80 and 9,331.20 is: 13,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.30 : 32,707.80 = 9,331.20 : x
  2. Step 2: Convert to fraction form
    21,813.30/32,707.80 = 9,331.20/x
  3. Step 3: Cross multiply
    21,813.30x = 32,707.80 × 9,331.20
  4. Step 4: Simplify right side
    21,813.30x = 305,203,023.36
  5. Step 5: Solve for x
    x = 305,203,023.36/21,813.30
  6. Step 6: Final answer
    x = 13,991.60

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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.