Home / 13,987.02-20,976-4,624.86

Finding the Fourth Proportional to 13,987.02, 20,976 and 4,624.86

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Solution

The fourth proportional to 13,987.02, 20,976 and 4,624.86 is: 6,935.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.02 : 20,976 = 4,624.86 : x
  2. Step 2: Convert to fraction form
    13,987.02/20,976 = 4,624.86/x
  3. Step 3: Cross multiply
    13,987.02x = 20,976 × 4,624.86
  4. Step 4: Simplify right side
    13,987.02x = 97,011,063.36
  5. Step 5: Solve for x
    x = 97,011,063.36/13,987.02
  6. Step 6: Final answer
    x = 6,935.79

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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.