Home / 21,638.28-32,461.80-9,158.34

Finding the Fourth Proportional to 21,638.28, 32,461.80 and 9,158.34

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Solution

The fourth proportional to 21,638.28, 32,461.80 and 9,158.34 is: 13,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.28 : 32,461.80 = 9,158.34 : x
  2. Step 2: Convert to fraction form
    21,638.28/32,461.80 = 9,158.34/x
  3. Step 3: Cross multiply
    21,638.28x = 32,461.80 × 9,158.34
  4. Step 4: Simplify right side
    21,638.28x = 297,296,201.41
  5. Step 5: Solve for x
    x = 297,296,201.41/21,638.28
  6. Step 6: Final answer
    x = 13,739.36

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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.