Home / 39,595.45-54,641.78-21,690.06

Finding the Fourth Proportional to 39,595.45, 54,641.78 and 21,690.06

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Solution

The fourth proportional to 39,595.45, 54,641.78 and 21,690.06 is: 29,932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,595.45 : 54,641.78 = 21,690.06 : x
  2. Step 2: Convert to fraction form
    39,595.45/54,641.78 = 21,690.06/x
  3. Step 3: Cross multiply
    39,595.45x = 54,641.78 × 21,690.06
  4. Step 4: Simplify right side
    39,595.45x = 1,185,183,486.71
  5. Step 5: Solve for x
    x = 1,185,183,486.71/39,595.45
  6. Step 6: Final answer
    x = 29,932.32

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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.