Home / 39,006.68-53,829-21,101.63

Finding the Fourth Proportional to 39,006.68, 53,829 and 21,101.63

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Solution

The fourth proportional to 39,006.68, 53,829 and 21,101.63 is: 29,120.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,006.68 : 53,829 = 21,101.63 : x
  2. Step 2: Convert to fraction form
    39,006.68/53,829 = 21,101.63/x
  3. Step 3: Cross multiply
    39,006.68x = 53,829 × 21,101.63
  4. Step 4: Simplify right side
    39,006.68x = 1,135,879,641.27
  5. Step 5: Solve for x
    x = 1,135,879,641.27/39,006.68
  6. Step 6: Final answer
    x = 29,120.13

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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.