Home / 39,980.79-55,173.11-22,075.42

Finding the Fourth Proportional to 39,980.79, 55,173.11 and 22,075.42

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Solution

The fourth proportional to 39,980.79, 55,173.11 and 22,075.42 is: 30,463.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.79 : 55,173.11 = 22,075.42 : x
  2. Step 2: Convert to fraction form
    39,980.79/55,173.11 = 22,075.42/x
  3. Step 3: Cross multiply
    39,980.79x = 55,173.11 × 22,075.42
  4. Step 4: Simplify right side
    39,980.79x = 1,217,969,189.71
  5. Step 5: Solve for x
    x = 1,217,969,189.71/39,980.79
  6. Step 6: Final answer
    x = 30,463.86

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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.