Home / 21,117.11-29,141.60-11,557.01

Finding the Fourth Proportional to 21,117.11, 29,141.60 and 11,557.01

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Solution

The fourth proportional to 21,117.11, 29,141.60 and 11,557.01 is: 15,948.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.11 : 29,141.60 = 11,557.01 : x
  2. Step 2: Convert to fraction form
    21,117.11/29,141.60 = 11,557.01/x
  3. Step 3: Cross multiply
    21,117.11x = 29,141.60 × 11,557.01
  4. Step 4: Simplify right side
    21,117.11x = 336,789,914.06
  5. Step 5: Solve for x
    x = 336,789,914.06/21,117.11
  6. Step 6: Final answer
    x = 15,948.68

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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.