Home / 13,693.44-18,897.12-7,724.55

Finding the Fourth Proportional to 13,693.44, 18,897.12 and 7,724.55

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Solution

The fourth proportional to 13,693.44, 18,897.12 and 7,724.55 is: 10,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.44 : 18,897.12 = 7,724.55 : x
  2. Step 2: Convert to fraction form
    13,693.44/18,897.12 = 7,724.55/x
  3. Step 3: Cross multiply
    13,693.44x = 18,897.12 × 7,724.55
  4. Step 4: Simplify right side
    13,693.44x = 145,971,748.30
  5. Step 5: Solve for x
    x = 145,971,748.30/13,693.44
  6. Step 6: Final answer
    x = 10,659.98

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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.