Home / 39,222.41-54,126.77-21,317.36

Finding the Fourth Proportional to 39,222.41, 54,126.77 and 21,317.36

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Solution

The fourth proportional to 39,222.41, 54,126.77 and 21,317.36 is: 29,417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,222.41 : 54,126.77 = 21,317.36 : x
  2. Step 2: Convert to fraction form
    39,222.41/54,126.77 = 21,317.36/x
  3. Step 3: Cross multiply
    39,222.41x = 54,126.77 × 21,317.36
  4. Step 4: Simplify right side
    39,222.41x = 1,153,839,464.51
  5. Step 5: Solve for x
    x = 1,153,839,464.51/39,222.41
  6. Step 6: Final answer
    x = 29,417.87

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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.