Home / 30,486.24-42,074.64-19,867.68

Finding the Fourth Proportional to 30,486.24, 42,074.64 and 19,867.68

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Solution

The fourth proportional to 30,486.24, 42,074.64 and 19,867.68 is: 27,419.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.24 : 42,074.64 = 19,867.68 : x
  2. Step 2: Convert to fraction form
    30,486.24/42,074.64 = 19,867.68/x
  3. Step 3: Cross multiply
    30,486.24x = 42,074.64 × 19,867.68
  4. Step 4: Simplify right side
    30,486.24x = 835,925,483.64
  5. Step 5: Solve for x
    x = 835,925,483.64/30,486.24
  6. Step 6: Final answer
    x = 27,419.76

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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.