Home / 13,663.60-18,855.58-7,695.86

Finding the Fourth Proportional to 13,663.60, 18,855.58 and 7,695.86

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Solution

The fourth proportional to 13,663.60, 18,855.58 and 7,695.86 is: 10,620.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.60 : 18,855.58 = 7,695.86 : x
  2. Step 2: Convert to fraction form
    13,663.60/18,855.58 = 7,695.86/x
  3. Step 3: Cross multiply
    13,663.60x = 18,855.58 × 7,695.86
  4. Step 4: Simplify right side
    13,663.60x = 145,109,903.90
  5. Step 5: Solve for x
    x = 145,109,903.90/13,663.60
  6. Step 6: Final answer
    x = 10,620.18

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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.