Home / 15,736.98-21,726.21-9,771.90

Finding the Fourth Proportional to 15,736.98, 21,726.21 and 9,771.90

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Solution

The fourth proportional to 15,736.98, 21,726.21 and 9,771.90 is: 13,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,736.98 : 21,726.21 = 9,771.90 : x
  2. Step 2: Convert to fraction form
    15,736.98/21,726.21 = 9,771.90/x
  3. Step 3: Cross multiply
    15,736.98x = 21,726.21 × 9,771.90
  4. Step 4: Simplify right side
    15,736.98x = 212,306,351.50
  5. Step 5: Solve for x
    x = 212,306,351.50/15,736.98
  6. Step 6: Final answer
    x = 13,490.92

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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.