Home / 21,772.80-32,594.40-13,003.20

Finding the Fourth Proportional to 21,772.80, 32,594.40 and 13,003.20

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Solution

The fourth proportional to 21,772.80, 32,594.40 and 13,003.20 is: 19,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.80 : 32,594.40 = 13,003.20 : x
  2. Step 2: Convert to fraction form
    21,772.80/32,594.40 = 13,003.20/x
  3. Step 3: Cross multiply
    21,772.80x = 32,594.40 × 13,003.20
  4. Step 4: Simplify right side
    21,772.80x = 423,831,502.08
  5. Step 5: Solve for x
    x = 423,831,502.08/21,772.80
  6. Step 6: Final answer
    x = 19,466.10

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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.