Home / 28,464.54-39,279.01-15,715.66

Finding the Fourth Proportional to 28,464.54, 39,279.01 and 15,715.66

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Solution

The fourth proportional to 28,464.54, 39,279.01 and 15,715.66 is: 21,686.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.54 : 39,279.01 = 15,715.66 : x
  2. Step 2: Convert to fraction form
    28,464.54/39,279.01 = 15,715.66/x
  3. Step 3: Cross multiply
    28,464.54x = 39,279.01 × 15,715.66
  4. Step 4: Simplify right side
    28,464.54x = 617,295,566.30
  5. Step 5: Solve for x
    x = 617,295,566.30/28,464.54
  6. Step 6: Final answer
    x = 21,686.48

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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.