Home / 21,549.80-32,303.10-9,871.40

Finding the Fourth Proportional to 21,549.80, 32,303.10 and 9,871.40

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Solution

The fourth proportional to 21,549.80, 32,303.10 and 9,871.40 is: 14,797.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.80 : 32,303.10 = 9,871.40 : x
  2. Step 2: Convert to fraction form
    21,549.80/32,303.10 = 9,871.40/x
  3. Step 3: Cross multiply
    21,549.80x = 32,303.10 × 9,871.40
  4. Step 4: Simplify right side
    21,549.80x = 318,876,821.34
  5. Step 5: Solve for x
    x = 318,876,821.34/21,549.80
  6. Step 6: Final answer
    x = 14,797.21

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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.