Home / 39,619.58-54,675.45-21,715.34

Finding the Fourth Proportional to 39,619.58, 54,675.45 and 21,715.34

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Solution

The fourth proportional to 39,619.58, 54,675.45 and 21,715.34 is: 29,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,619.58 : 54,675.45 = 21,715.34 : x
  2. Step 2: Convert to fraction form
    39,619.58/54,675.45 = 21,715.34/x
  3. Step 3: Cross multiply
    39,619.58x = 54,675.45 × 21,715.34
  4. Step 4: Simplify right side
    39,619.58x = 1,187,295,713.03
  5. Step 5: Solve for x
    x = 1,187,295,713.03/39,619.58
  6. Step 6: Final answer
    x = 29,967.40

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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.