Home / 13,972.74-20,938.74-6,478.59

Finding the Fourth Proportional to 13,972.74, 20,938.74 and 6,478.59

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Solution

The fourth proportional to 13,972.74, 20,938.74 and 6,478.59 is: 9,708.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.74 : 20,938.74 = 6,478.59 : x
  2. Step 2: Convert to fraction form
    13,972.74/20,938.74 = 6,478.59/x
  3. Step 3: Cross multiply
    13,972.74x = 20,938.74 × 6,478.59
  4. Step 4: Simplify right side
    13,972.74x = 135,653,558.71
  5. Step 5: Solve for x
    x = 135,653,558.71/13,972.74
  6. Step 6: Final answer
    x = 9,708.44

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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.