Home / 13,656.48-18,844.50-7,688.04

Finding the Fourth Proportional to 13,656.48, 18,844.50 and 7,688.04

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Solution

The fourth proportional to 13,656.48, 18,844.50 and 7,688.04 is: 10,608.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.48 : 18,844.50 = 7,688.04 : x
  2. Step 2: Convert to fraction form
    13,656.48/18,844.50 = 7,688.04/x
  3. Step 3: Cross multiply
    13,656.48x = 18,844.50 × 7,688.04
  4. Step 4: Simplify right side
    13,656.48x = 144,877,269.78
  5. Step 5: Solve for x
    x = 144,877,269.78/13,656.48
  6. Step 6: Final answer
    x = 10,608.68

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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.