Home / 14,509.09-20,022.51-8,221.47

Finding the Fourth Proportional to 14,509.09, 20,022.51 and 8,221.47

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Solution

The fourth proportional to 14,509.09, 20,022.51 and 8,221.47 is: 11,345.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,509.09 : 20,022.51 = 8,221.47 : x
  2. Step 2: Convert to fraction form
    14,509.09/20,022.51 = 8,221.47/x
  3. Step 3: Cross multiply
    14,509.09x = 20,022.51 × 8,221.47
  4. Step 4: Simplify right side
    14,509.09x = 164,614,465.29
  5. Step 5: Solve for x
    x = 164,614,465.29/14,509.09
  6. Step 6: Final answer
    x = 11,345.61

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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.