Home / 13,402.26-18,488.25-8,688.06

Finding the Fourth Proportional to 13,402.26, 18,488.25 and 8,688.06

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Solution

The fourth proportional to 13,402.26, 18,488.25 and 8,688.06 is: 11,985.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.26 : 18,488.25 = 8,688.06 : x
  2. Step 2: Convert to fraction form
    13,402.26/18,488.25 = 8,688.06/x
  3. Step 3: Cross multiply
    13,402.26x = 18,488.25 × 8,688.06
  4. Step 4: Simplify right side
    13,402.26x = 160,627,025.30
  5. Step 5: Solve for x
    x = 160,627,025.30/13,402.26
  6. Step 6: Final answer
    x = 11,985.07

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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.