Home / 13,289.08-18,334.14-8,815

Finding the Fourth Proportional to 13,289.08, 18,334.14 and 8,815

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Solution

The fourth proportional to 13,289.08, 18,334.14 and 8,815 is: 12,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.08 : 18,334.14 = 8,815 : x
  2. Step 2: Convert to fraction form
    13,289.08/18,334.14 = 8,815/x
  3. Step 3: Cross multiply
    13,289.08x = 18,334.14 × 8,815
  4. Step 4: Simplify right side
    13,289.08x = 161,615,444.10
  5. Step 5: Solve for x
    x = 161,615,444.10/13,289.08
  6. Step 6: Final answer
    x = 12,161.52

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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.