Home / 14,990.45-20,686.73-8,276.49

Finding the Fourth Proportional to 14,990.45, 20,686.73 and 8,276.49

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Solution

The fourth proportional to 14,990.45, 20,686.73 and 8,276.49 is: 11,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.45 : 20,686.73 = 8,276.49 : x
  2. Step 2: Convert to fraction form
    14,990.45/20,686.73 = 8,276.49/x
  3. Step 3: Cross multiply
    14,990.45x = 20,686.73 × 8,276.49
  4. Step 4: Simplify right side
    14,990.45x = 171,213,472.60
  5. Step 5: Solve for x
    x = 171,213,472.60/14,990.45
  6. Step 6: Final answer
    x = 11,421.51

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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.