Home / 21,622.45-29,838.97-11,686.45

Finding the Fourth Proportional to 21,622.45, 29,838.97 and 11,686.45

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Solution

The fourth proportional to 21,622.45, 29,838.97 and 11,686.45 is: 16,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.45 : 29,838.97 = 11,686.45 : x
  2. Step 2: Convert to fraction form
    21,622.45/29,838.97 = 11,686.45/x
  3. Step 3: Cross multiply
    21,622.45x = 29,838.97 × 11,686.45
  4. Step 4: Simplify right side
    21,622.45x = 348,711,720.16
  5. Step 5: Solve for x
    x = 348,711,720.16/21,622.45
  6. Step 6: Final answer
    x = 16,127.30

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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.