Home / 14,218.47-21,330.75-5,453.31

Finding the Fourth Proportional to 14,218.47, 21,330.75 and 5,453.31

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Solution

The fourth proportional to 14,218.47, 21,330.75 and 5,453.31 is: 8,181.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.47 : 21,330.75 = 5,453.31 : x
  2. Step 2: Convert to fraction form
    14,218.47/21,330.75 = 5,453.31/x
  3. Step 3: Cross multiply
    14,218.47x = 21,330.75 × 5,453.31
  4. Step 4: Simplify right side
    14,218.47x = 116,323,192.28
  5. Step 5: Solve for x
    x = 116,323,192.28/14,218.47
  6. Step 6: Final answer
    x = 8,181.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.