Home / 28,474.08-39,290.86-15,726.51

Finding the Fourth Proportional to 28,474.08, 39,290.86 and 15,726.51

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Solution

The fourth proportional to 28,474.08, 39,290.86 and 15,726.51 is: 21,700.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474.08 : 39,290.86 = 15,726.51 : x
  2. Step 2: Convert to fraction form
    28,474.08/39,290.86 = 15,726.51/x
  3. Step 3: Cross multiply
    28,474.08x = 39,290.86 × 15,726.51
  4. Step 4: Simplify right side
    28,474.08x = 617,907,906.24
  5. Step 5: Solve for x
    x = 617,907,906.24/28,474.08
  6. Step 6: Final answer
    x = 21,700.72

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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.