Home / 21,008.20-31,526.70-9,329.80

Finding the Fourth Proportional to 21,008.20, 31,526.70 and 9,329.80

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Solution

The fourth proportional to 21,008.20, 31,526.70 and 9,329.80 is: 14,001.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.20 : 31,526.70 = 9,329.80 : x
  2. Step 2: Convert to fraction form
    21,008.20/31,526.70 = 9,329.80/x
  3. Step 3: Cross multiply
    21,008.20x = 31,526.70 × 9,329.80
  4. Step 4: Simplify right side
    21,008.20x = 294,137,805.66
  5. Step 5: Solve for x
    x = 294,137,805.66/21,008.20
  6. Step 6: Final answer
    x = 14,001.10

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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.