Home / 13,697.12-18,902.04-8,663.51

Finding the Fourth Proportional to 13,697.12, 18,902.04 and 8,663.51

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Solution

The fourth proportional to 13,697.12, 18,902.04 and 8,663.51 is: 11,955.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.12 : 18,902.04 = 8,663.51 : x
  2. Step 2: Convert to fraction form
    13,697.12/18,902.04 = 8,663.51/x
  3. Step 3: Cross multiply
    13,697.12x = 18,902.04 × 8,663.51
  4. Step 4: Simplify right side
    13,697.12x = 163,758,012.56
  5. Step 5: Solve for x
    x = 163,758,012.56/13,697.12
  6. Step 6: Final answer
    x = 11,955.65

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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.