Home / 28,467.13-39,285.27-15,720.27

Finding the Fourth Proportional to 28,467.13, 39,285.27 and 15,720.27

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Solution

The fourth proportional to 28,467.13, 39,285.27 and 15,720.27 is: 21,694.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,467.13 : 39,285.27 = 15,720.27 : x
  2. Step 2: Convert to fraction form
    28,467.13/39,285.27 = 15,720.27/x
  3. Step 3: Cross multiply
    28,467.13x = 39,285.27 × 15,720.27
  4. Step 4: Simplify right side
    28,467.13x = 617,575,051.42
  5. Step 5: Solve for x
    x = 617,575,051.42/28,467.13
  6. Step 6: Final answer
    x = 21,694.32

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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.