Home / 13,732.36-18,943.68-8,688.07

Finding the Fourth Proportional to 13,732.36, 18,943.68 and 8,688.07

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Solution

The fourth proportional to 13,732.36, 18,943.68 and 8,688.07 is: 11,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,732.36 : 18,943.68 = 8,688.07 : x
  2. Step 2: Convert to fraction form
    13,732.36/18,943.68 = 8,688.07/x
  3. Step 3: Cross multiply
    13,732.36x = 18,943.68 × 8,688.07
  4. Step 4: Simplify right side
    13,732.36x = 164,584,017.90
  5. Step 5: Solve for x
    x = 164,584,017.90/13,732.36
  6. Step 6: Final answer
    x = 11,985.12

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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.