Home / 28,417.98-39,216.88-15,843.18

Finding the Fourth Proportional to 28,417.98, 39,216.88 and 15,843.18

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Solution

The fourth proportional to 28,417.98, 39,216.88 and 15,843.18 is: 21,863.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.98 : 39,216.88 = 15,843.18 : x
  2. Step 2: Convert to fraction form
    28,417.98/39,216.88 = 15,843.18/x
  3. Step 3: Cross multiply
    28,417.98x = 39,216.88 × 15,843.18
  4. Step 4: Simplify right side
    28,417.98x = 621,320,088.88
  5. Step 5: Solve for x
    x = 621,320,088.88/28,417.98
  6. Step 6: Final answer
    x = 21,863.63

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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.