Home / 39,015.58-53,841.10-21,110.19

Finding the Fourth Proportional to 39,015.58, 53,841.10 and 21,110.19

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Solution

The fourth proportional to 39,015.58, 53,841.10 and 21,110.19 is: 29,131.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,015.58 : 53,841.10 = 21,110.19 : x
  2. Step 2: Convert to fraction form
    39,015.58/53,841.10 = 21,110.19/x
  3. Step 3: Cross multiply
    39,015.58x = 53,841.10 × 21,110.19
  4. Step 4: Simplify right side
    39,015.58x = 1,136,595,850.81
  5. Step 5: Solve for x
    x = 1,136,595,850.81/39,015.58
  6. Step 6: Final answer
    x = 29,131.85

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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.