Home / 39,278.23-54,203.70-21,373.30

Finding the Fourth Proportional to 39,278.23, 54,203.70 and 21,373.30

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Solution

The fourth proportional to 39,278.23, 54,203.70 and 21,373.30 is: 29,495.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.23 : 54,203.70 = 21,373.30 : x
  2. Step 2: Convert to fraction form
    39,278.23/54,203.70 = 21,373.30/x
  3. Step 3: Cross multiply
    39,278.23x = 54,203.70 × 21,373.30
  4. Step 4: Simplify right side
    39,278.23x = 1,158,511,941.21
  5. Step 5: Solve for x
    x = 1,158,511,941.21/39,278.23
  6. Step 6: Final answer
    x = 29,495.01

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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.