Home / 14,686.40-20,268.21-8,312.97

Finding the Fourth Proportional to 14,686.40, 20,268.21 and 8,312.97

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Solution

The fourth proportional to 14,686.40, 20,268.21 and 8,312.97 is: 11,472.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,686.40 : 20,268.21 = 8,312.97 : x
  2. Step 2: Convert to fraction form
    14,686.40/20,268.21 = 8,312.97/x
  3. Step 3: Cross multiply
    14,686.40x = 20,268.21 × 8,312.97
  4. Step 4: Simplify right side
    14,686.40x = 168,489,021.68
  5. Step 5: Solve for x
    x = 168,489,021.68/14,686.40
  6. Step 6: Final answer
    x = 11,472.46

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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.