Home / 13,690.48-18,892.84-7,722.13

Finding the Fourth Proportional to 13,690.48, 18,892.84 and 7,722.13

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Solution

The fourth proportional to 13,690.48, 18,892.84 and 7,722.13 is: 10,656.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.48 : 18,892.84 = 7,722.13 : x
  2. Step 2: Convert to fraction form
    13,690.48/18,892.84 = 7,722.13/x
  3. Step 3: Cross multiply
    13,690.48x = 18,892.84 × 7,722.13
  4. Step 4: Simplify right side
    13,690.48x = 145,892,966.55
  5. Step 5: Solve for x
    x = 145,892,966.55/13,690.48
  6. Step 6: Final answer
    x = 10,656.53

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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.