Home / 14,502.29-20,011.40-8,128.37

Finding the Fourth Proportional to 14,502.29, 20,011.40 and 8,128.37

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Solution

The fourth proportional to 14,502.29, 20,011.40 and 8,128.37 is: 11,216.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,502.29 : 20,011.40 = 8,128.37 : x
  2. Step 2: Convert to fraction form
    14,502.29/20,011.40 = 8,128.37/x
  3. Step 3: Cross multiply
    14,502.29x = 20,011.40 × 8,128.37
  4. Step 4: Simplify right side
    14,502.29x = 162,659,922.72
  5. Step 5: Solve for x
    x = 162,659,922.72/14,502.29
  6. Step 6: Final answer
    x = 11,216.16

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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.