Home / 13,666.60-18,861.69-7,699.42

Finding the Fourth Proportional to 13,666.60, 18,861.69 and 7,699.42

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Solution

The fourth proportional to 13,666.60, 18,861.69 and 7,699.42 is: 10,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.60 : 18,861.69 = 7,699.42 : x
  2. Step 2: Convert to fraction form
    13,666.60/18,861.69 = 7,699.42/x
  3. Step 3: Cross multiply
    13,666.60x = 18,861.69 × 7,699.42
  4. Step 4: Simplify right side
    13,666.60x = 145,224,073.22
  5. Step 5: Solve for x
    x = 145,224,073.22/13,666.60
  6. Step 6: Final answer
    x = 10,626.20

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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.