Home / 21,099.10-29,117.37-11,539.54

Finding the Fourth Proportional to 21,099.10, 29,117.37 and 11,539.54

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Solution

The fourth proportional to 21,099.10, 29,117.37 and 11,539.54 is: 15,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.10 : 29,117.37 = 11,539.54 : x
  2. Step 2: Convert to fraction form
    21,099.10/29,117.37 = 11,539.54/x
  3. Step 3: Cross multiply
    21,099.10x = 29,117.37 × 11,539.54
  4. Step 4: Simplify right side
    21,099.10x = 336,001,055.81
  5. Step 5: Solve for x
    x = 336,001,055.81/21,099.10
  6. Step 6: Final answer
    x = 15,924.90

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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.