Home / 30,646.12-42,296.22-18,716.32

Finding the Fourth Proportional to 30,646.12, 42,296.22 and 18,716.32

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Solution

The fourth proportional to 30,646.12, 42,296.22 and 18,716.32 is: 25,831.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,646.12 : 42,296.22 = 18,716.32 : x
  2. Step 2: Convert to fraction form
    30,646.12/42,296.22 = 18,716.32/x
  3. Step 3: Cross multiply
    30,646.12x = 42,296.22 × 18,716.32
  4. Step 4: Simplify right side
    30,646.12x = 791,629,588.31
  5. Step 5: Solve for x
    x = 791,629,588.31/30,646.12
  6. Step 6: Final answer
    x = 25,831.32

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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.