Home / 39,330.98-54,278.06-21,427.65

Finding the Fourth Proportional to 39,330.98, 54,278.06 and 21,427.65

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Solution

The fourth proportional to 39,330.98, 54,278.06 and 21,427.65 is: 29,570.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,330.98 : 54,278.06 = 21,427.65 : x
  2. Step 2: Convert to fraction form
    39,330.98/54,278.06 = 21,427.65/x
  3. Step 3: Cross multiply
    39,330.98x = 54,278.06 × 21,427.65
  4. Step 4: Simplify right side
    39,330.98x = 1,163,051,165.22
  5. Step 5: Solve for x
    x = 1,163,051,165.22/39,330.98
  6. Step 6: Final answer
    x = 29,570.87

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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.