Home / 21,743.68-30,018.72-14,313.28

Finding the Fourth Proportional to 21,743.68, 30,018.72 and 14,313.28

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Solution

The fourth proportional to 21,743.68, 30,018.72 and 14,313.28 is: 19,760.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,743.68 : 30,018.72 = 14,313.28 : x
  2. Step 2: Convert to fraction form
    21,743.68/30,018.72 = 14,313.28/x
  3. Step 3: Cross multiply
    21,743.68x = 30,018.72 × 14,313.28
  4. Step 4: Simplify right side
    21,743.68x = 429,666,344.60
  5. Step 5: Solve for x
    x = 429,666,344.60/21,743.68
  6. Step 6: Final answer
    x = 19,760.52

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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.