Home / 39,278.29-54,203.58-21,372.98

Finding the Fourth Proportional to 39,278.29, 54,203.58 and 21,372.98

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Solution

The fourth proportional to 39,278.29, 54,203.58 and 21,372.98 is: 29,494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.29 : 54,203.58 = 21,372.98 : x
  2. Step 2: Convert to fraction form
    39,278.29/54,203.58 = 21,372.98/x
  3. Step 3: Cross multiply
    39,278.29x = 54,203.58 × 21,372.98
  4. Step 4: Simplify right side
    39,278.29x = 1,158,492,126.70
  5. Step 5: Solve for x
    x = 1,158,492,126.70/39,278.29
  6. Step 6: Final answer
    x = 29,494.47

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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.