Home / 13,109.04-18,102.50-8,330.56

Finding the Fourth Proportional to 13,109.04, 18,102.50 and 8,330.56

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Solution

The fourth proportional to 13,109.04, 18,102.50 and 8,330.56 is: 11,503.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.04 : 18,102.50 = 8,330.56 : x
  2. Step 2: Convert to fraction form
    13,109.04/18,102.50 = 8,330.56/x
  3. Step 3: Cross multiply
    13,109.04x = 18,102.50 × 8,330.56
  4. Step 4: Simplify right side
    13,109.04x = 150,803,962.40
  5. Step 5: Solve for x
    x = 150,803,962.40/13,109.04
  6. Step 6: Final answer
    x = 11,503.81

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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.