Home / 13,938.60-19,262.92-11,416.72

Finding the Fourth Proportional to 13,938.60, 19,262.92 and 11,416.72

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Solution

The fourth proportional to 13,938.60, 19,262.92 and 11,416.72 is: 15,777.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.60 : 19,262.92 = 11,416.72 : x
  2. Step 2: Convert to fraction form
    13,938.60/19,262.92 = 11,416.72/x
  3. Step 3: Cross multiply
    13,938.60x = 19,262.92 × 11,416.72
  4. Step 4: Simplify right side
    13,938.60x = 219,919,267.71
  5. Step 5: Solve for x
    x = 219,919,267.71/13,938.60
  6. Step 6: Final answer
    x = 15,777.72

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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.