Home / 14,708.34-20,297.52-8,420.76

Finding the Fourth Proportional to 14,708.34, 20,297.52 and 8,420.76

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Solution

The fourth proportional to 14,708.34, 20,297.52 and 8,420.76 is: 11,620.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,708.34 : 20,297.52 = 8,420.76 : x
  2. Step 2: Convert to fraction form
    14,708.34/20,297.52 = 8,420.76/x
  3. Step 3: Cross multiply
    14,708.34x = 20,297.52 × 8,420.76
  4. Step 4: Simplify right side
    14,708.34x = 170,920,544.52
  5. Step 5: Solve for x
    x = 170,920,544.52/14,708.34
  6. Step 6: Final answer
    x = 11,620.65

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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.