Home / 21,946.62-30,291.09-13,875.15

Finding the Fourth Proportional to 21,946.62, 30,291.09 and 13,875.15

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Solution

The fourth proportional to 21,946.62, 30,291.09 and 13,875.15 is: 19,150.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,946.62 : 30,291.09 = 13,875.15 : x
  2. Step 2: Convert to fraction form
    21,946.62/30,291.09 = 13,875.15/x
  3. Step 3: Cross multiply
    21,946.62x = 30,291.09 × 13,875.15
  4. Step 4: Simplify right side
    21,946.62x = 420,293,347.61
  5. Step 5: Solve for x
    x = 420,293,347.61/21,946.62
  6. Step 6: Final answer
    x = 19,150.71

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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.