Home / 14,990.36-20,684.10-8,615.46

Finding the Fourth Proportional to 14,990.36, 20,684.10 and 8,615.46

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Solution

The fourth proportional to 14,990.36, 20,684.10 and 8,615.46 is: 11,887.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.36 : 20,684.10 = 8,615.46 : x
  2. Step 2: Convert to fraction form
    14,990.36/20,684.10 = 8,615.46/x
  3. Step 3: Cross multiply
    14,990.36x = 20,684.10 × 8,615.46
  4. Step 4: Simplify right side
    14,990.36x = 178,203,036.19
  5. Step 5: Solve for x
    x = 178,203,036.19/14,990.36
  6. Step 6: Final answer
    x = 11,887.85

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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.