Home / 39,022.86-53,851.69-21,117.86

Finding the Fourth Proportional to 39,022.86, 53,851.69 and 21,117.86

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Solution

The fourth proportional to 39,022.86, 53,851.69 and 21,117.86 is: 29,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,022.86 : 53,851.69 = 21,117.86 : x
  2. Step 2: Convert to fraction form
    39,022.86/53,851.69 = 21,117.86/x
  3. Step 3: Cross multiply
    39,022.86x = 53,851.69 × 21,117.86
  4. Step 4: Simplify right side
    39,022.86x = 1,137,232,479.22
  5. Step 5: Solve for x
    x = 1,137,232,479.22/39,022.86
  6. Step 6: Final answer
    x = 29,142.73

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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.