Home / 20,317.24-30,478.74-6,278.41

Finding the Fourth Proportional to 20,317.24, 30,478.74 and 6,278.41

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Solution

The fourth proportional to 20,317.24, 30,478.74 and 6,278.41 is: 9,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.24 : 30,478.74 = 6,278.41 : x
  2. Step 2: Convert to fraction form
    20,317.24/30,478.74 = 6,278.41/x
  3. Step 3: Cross multiply
    20,317.24x = 30,478.74 × 6,278.41
  4. Step 4: Simplify right side
    20,317.24x = 191,358,026.00
  5. Step 5: Solve for x
    x = 191,358,026.00/20,317.24
  6. Step 6: Final answer
    x = 9,418.50

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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.