Home / 39,356.82-54,312.12-21,451.77

Finding the Fourth Proportional to 39,356.82, 54,312.12 and 21,451.77

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Solution

The fourth proportional to 39,356.82, 54,312.12 and 21,451.77 is: 29,603.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,356.82 : 54,312.12 = 21,451.77 : x
  2. Step 2: Convert to fraction form
    39,356.82/54,312.12 = 21,451.77/x
  3. Step 3: Cross multiply
    39,356.82x = 54,312.12 × 21,451.77
  4. Step 4: Simplify right side
    39,356.82x = 1,165,091,106.45
  5. Step 5: Solve for x
    x = 1,165,091,106.45/39,356.82
  6. Step 6: Final answer
    x = 29,603.28

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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.