Home / 15,721.36-21,695.10-8,551.18

Finding the Fourth Proportional to 15,721.36, 21,695.10 and 8,551.18

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Solution

The fourth proportional to 15,721.36, 21,695.10 and 8,551.18 is: 11,800.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,721.36 : 21,695.10 = 8,551.18 : x
  2. Step 2: Convert to fraction form
    15,721.36/21,695.10 = 8,551.18/x
  3. Step 3: Cross multiply
    15,721.36x = 21,695.10 × 8,551.18
  4. Step 4: Simplify right side
    15,721.36x = 185,518,705.22
  5. Step 5: Solve for x
    x = 185,518,705.22/15,721.36
  6. Step 6: Final answer
    x = 11,800.42

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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.