Home / 27,656.87-38,157.36-15,715.85

Finding the Fourth Proportional to 27,656.87, 38,157.36 and 15,715.85

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Solution

The fourth proportional to 27,656.87, 38,157.36 and 15,715.85 is: 21,682.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,656.87 : 38,157.36 = 15,715.85 : x
  2. Step 2: Convert to fraction form
    27,656.87/38,157.36 = 15,715.85/x
  3. Step 3: Cross multiply
    27,656.87x = 38,157.36 × 15,715.85
  4. Step 4: Simplify right side
    27,656.87x = 599,675,346.16
  5. Step 5: Solve for x
    x = 599,675,346.16/27,656.87
  6. Step 6: Final answer
    x = 21,682.69

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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.