Home / 28,085.14-38,757.50-15,509.88

Finding the Fourth Proportional to 28,085.14, 38,757.50 and 15,509.88

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Solution

The fourth proportional to 28,085.14, 38,757.50 and 15,509.88 is: 21,403.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.14 : 38,757.50 = 15,509.88 : x
  2. Step 2: Convert to fraction form
    28,085.14/38,757.50 = 15,509.88/x
  3. Step 3: Cross multiply
    28,085.14x = 38,757.50 × 15,509.88
  4. Step 4: Simplify right side
    28,085.14x = 601,124,174.10
  5. Step 5: Solve for x
    x = 601,124,174.10/28,085.14
  6. Step 6: Final answer
    x = 21,403.64

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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.