Home / 14,501.39-20,012.13-8,128.31

Finding the Fourth Proportional to 14,501.39, 20,012.13 and 8,128.31

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Solution

The fourth proportional to 14,501.39, 20,012.13 and 8,128.31 is: 11,217.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,501.39 : 20,012.13 = 8,128.31 : x
  2. Step 2: Convert to fraction form
    14,501.39/20,012.13 = 8,128.31/x
  3. Step 3: Cross multiply
    14,501.39x = 20,012.13 × 8,128.31
  4. Step 4: Simplify right side
    14,501.39x = 162,664,696.34
  5. Step 5: Solve for x
    x = 162,664,696.34/14,501.39
  6. Step 6: Final answer
    x = 11,217.18

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Double scale
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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.