Home / 21,766.64-30,039.84-13,266.68

Finding the Fourth Proportional to 21,766.64, 30,039.84 and 13,266.68

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Solution

The fourth proportional to 21,766.64, 30,039.84 and 13,266.68 is: 18,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.64 : 30,039.84 = 13,266.68 : x
  2. Step 2: Convert to fraction form
    21,766.64/30,039.84 = 13,266.68/x
  3. Step 3: Cross multiply
    21,766.64x = 30,039.84 × 13,266.68
  4. Step 4: Simplify right side
    21,766.64x = 398,528,944.53
  5. Step 5: Solve for x
    x = 398,528,944.53/21,766.64
  6. Step 6: Final answer
    x = 18,309.16

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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.