Home / 39,022.66-53,851.21-21,117.66

Finding the Fourth Proportional to 39,022.66, 53,851.21 and 21,117.66

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Solution

The fourth proportional to 39,022.66, 53,851.21 and 21,117.66 is: 29,142.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,022.66 : 53,851.21 = 21,117.66 : x
  2. Step 2: Convert to fraction form
    39,022.66/53,851.21 = 21,117.66/x
  3. Step 3: Cross multiply
    39,022.66x = 53,851.21 × 21,117.66
  4. Step 4: Simplify right side
    39,022.66x = 1,137,211,543.37
  5. Step 5: Solve for x
    x = 1,137,211,543.37/39,022.66
  6. Step 6: Final answer
    x = 29,142.34

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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.