Home / 15,114.77-20,856.48-8,399.93

Finding the Fourth Proportional to 15,114.77, 20,856.48 and 8,399.93

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Solution

The fourth proportional to 15,114.77, 20,856.48 and 8,399.93 is: 11,590.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.77 : 20,856.48 = 8,399.93 : x
  2. Step 2: Convert to fraction form
    15,114.77/20,856.48 = 8,399.93/x
  3. Step 3: Cross multiply
    15,114.77x = 20,856.48 × 8,399.93
  4. Step 4: Simplify right side
    15,114.77x = 175,192,867.76
  5. Step 5: Solve for x
    x = 175,192,867.76/15,114.77
  6. Step 6: Final answer
    x = 11,590.84

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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.