Home / 19,854.24-27,427.32-15,870.12

Finding the Fourth Proportional to 19,854.24, 27,427.32 and 15,870.12

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Solution

The fourth proportional to 19,854.24, 27,427.32 and 15,870.12 is: 21,923.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,854.24 : 27,427.32 = 15,870.12 : x
  2. Step 2: Convert to fraction form
    19,854.24/27,427.32 = 15,870.12/x
  3. Step 3: Cross multiply
    19,854.24x = 27,427.32 × 15,870.12
  4. Step 4: Simplify right side
    19,854.24x = 435,274,859.68
  5. Step 5: Solve for x
    x = 435,274,859.68/19,854.24
  6. Step 6: Final answer
    x = 21,923.52

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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.