Home / 13,654.90-18,843.87-7,688.71

Finding the Fourth Proportional to 13,654.90, 18,843.87 and 7,688.71

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Solution

The fourth proportional to 13,654.90, 18,843.87 and 7,688.71 is: 10,610.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.90 : 18,843.87 = 7,688.71 : x
  2. Step 2: Convert to fraction form
    13,654.90/18,843.87 = 7,688.71/x
  3. Step 3: Cross multiply
    13,654.90x = 18,843.87 × 7,688.71
  4. Step 4: Simplify right side
    13,654.90x = 144,885,051.71
  5. Step 5: Solve for x
    x = 144,885,051.71/13,654.90
  6. Step 6: Final answer
    x = 10,610.48

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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.