Home / 15,220.31-21,000.06-9,252.23

Finding the Fourth Proportional to 15,220.31, 21,000.06 and 9,252.23

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Solution

The fourth proportional to 15,220.31, 21,000.06 and 9,252.23 is: 12,765.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.31 : 21,000.06 = 9,252.23 : x
  2. Step 2: Convert to fraction form
    15,220.31/21,000.06 = 9,252.23/x
  3. Step 3: Cross multiply
    15,220.31x = 21,000.06 × 9,252.23
  4. Step 4: Simplify right side
    15,220.31x = 194,297,280.13
  5. Step 5: Solve for x
    x = 194,297,280.13/15,220.31
  6. Step 6: Final answer
    x = 12,765.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.