Home / 28,209.88-38,928.13-16,272.51

Finding the Fourth Proportional to 28,209.88, 38,928.13 and 16,272.51

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Solution

The fourth proportional to 28,209.88, 38,928.13 and 16,272.51 is: 22,455.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.88 : 38,928.13 = 16,272.51 : x
  2. Step 2: Convert to fraction form
    28,209.88/38,928.13 = 16,272.51/x
  3. Step 3: Cross multiply
    28,209.88x = 38,928.13 × 16,272.51
  4. Step 4: Simplify right side
    28,209.88x = 633,458,384.71
  5. Step 5: Solve for x
    x = 633,458,384.71/28,209.88
  6. Step 6: Final answer
    x = 22,455.20

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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.