Home / 43,398.27-65,075.49-21,178.35

Finding the Fourth Proportional to 43,398.27, 65,075.49 and 21,178.35

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Solution

The fourth proportional to 43,398.27, 65,075.49 and 21,178.35 is: 31,756.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,398.27 : 65,075.49 = 21,178.35 : x
  2. Step 2: Convert to fraction form
    43,398.27/65,075.49 = 21,178.35/x
  3. Step 3: Cross multiply
    43,398.27x = 65,075.49 × 21,178.35
  4. Step 4: Simplify right side
    43,398.27x = 1,378,191,503.64
  5. Step 5: Solve for x
    x = 1,378,191,503.64/43,398.27
  6. Step 6: Final answer
    x = 31,756.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.