Home / 14,990.15-20,687.36-8,275.76

Finding the Fourth Proportional to 14,990.15, 20,687.36 and 8,275.76

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Solution

The fourth proportional to 14,990.15, 20,687.36 and 8,275.76 is: 11,421.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.15 : 20,687.36 = 8,275.76 : x
  2. Step 2: Convert to fraction form
    14,990.15/20,687.36 = 8,275.76/x
  3. Step 3: Cross multiply
    14,990.15x = 20,687.36 × 8,275.76
  4. Step 4: Simplify right side
    14,990.15x = 171,203,626.39
  5. Step 5: Solve for x
    x = 171,203,626.39/14,990.15
  6. Step 6: Final answer
    x = 11,421.07

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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.