Home / 39,015.71-53,841.29-21,110.31

Finding the Fourth Proportional to 39,015.71, 53,841.29 and 21,110.31

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Solution

The fourth proportional to 39,015.71, 53,841.29 and 21,110.31 is: 29,132.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,015.71 : 53,841.29 = 21,110.31 : x
  2. Step 2: Convert to fraction form
    39,015.71/53,841.29 = 21,110.31/x
  3. Step 3: Cross multiply
    39,015.71x = 53,841.29 × 21,110.31
  4. Step 4: Simplify right side
    39,015.71x = 1,136,606,217.15
  5. Step 5: Solve for x
    x = 1,136,606,217.15/39,015.71
  6. Step 6: Final answer
    x = 29,132.02

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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.