Home / 21,328.80-31,985.10-6,532.80

Finding the Fourth Proportional to 21,328.80, 31,985.10 and 6,532.80

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Solution

The fourth proportional to 21,328.80, 31,985.10 and 6,532.80 is: 9,796.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.80 : 31,985.10 = 6,532.80 : x
  2. Step 2: Convert to fraction form
    21,328.80/31,985.10 = 6,532.80/x
  3. Step 3: Cross multiply
    21,328.80x = 31,985.10 × 6,532.80
  4. Step 4: Simplify right side
    21,328.80x = 208,952,261.28
  5. Step 5: Solve for x
    x = 208,952,261.28/21,328.80
  6. Step 6: Final answer
    x = 9,796.72

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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.