Home / 21,551.66-29,722.34-15,087.98

Finding the Fourth Proportional to 21,551.66, 29,722.34 and 15,087.98

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Solution

The fourth proportional to 21,551.66, 29,722.34 and 15,087.98 is: 20,808.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.66 : 29,722.34 = 15,087.98 : x
  2. Step 2: Convert to fraction form
    21,551.66/29,722.34 = 15,087.98/x
  3. Step 3: Cross multiply
    21,551.66x = 29,722.34 × 15,087.98
  4. Step 4: Simplify right side
    21,551.66x = 448,450,071.47
  5. Step 5: Solve for x
    x = 448,450,071.47/21,551.66
  6. Step 6: Final answer
    x = 20,808.15

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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.