Home / 19,853.12-27,378.75-15,833.32

Finding the Fourth Proportional to 19,853.12, 27,378.75 and 15,833.32

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Solution

The fourth proportional to 19,853.12, 27,378.75 and 15,833.32 is: 21,835.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,853.12 : 27,378.75 = 15,833.32 : x
  2. Step 2: Convert to fraction form
    19,853.12/27,378.75 = 15,833.32/x
  3. Step 3: Cross multiply
    19,853.12x = 27,378.75 × 15,833.32
  4. Step 4: Simplify right side
    19,853.12x = 433,496,382.13
  5. Step 5: Solve for x
    x = 433,496,382.13/19,853.12
  6. Step 6: Final answer
    x = 21,835.17

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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.