Home / 25,943.59-38,920.85-8,412.05

Finding the Fourth Proportional to 25,943.59, 38,920.85 and 8,412.05

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Solution

The fourth proportional to 25,943.59, 38,920.85 and 8,412.05 is: 12,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,943.59 : 38,920.85 = 8,412.05 : x
  2. Step 2: Convert to fraction form
    25,943.59/38,920.85 = 8,412.05/x
  3. Step 3: Cross multiply
    25,943.59x = 38,920.85 × 8,412.05
  4. Step 4: Simplify right side
    25,943.59x = 327,403,980.44
  5. Step 5: Solve for x
    x = 327,403,980.44/25,943.59
  6. Step 6: Final answer
    x = 12,619.84

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1.5x scale

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.