Home / 21,853.14-30,162.15-13,358.22

Finding the Fourth Proportional to 21,853.14, 30,162.15 and 13,358.22

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Solution

The fourth proportional to 21,853.14, 30,162.15 and 13,358.22 is: 18,437.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,853.14 : 30,162.15 = 13,358.22 : x
  2. Step 2: Convert to fraction form
    21,853.14/30,162.15 = 13,358.22/x
  3. Step 3: Cross multiply
    21,853.14x = 30,162.15 × 13,358.22
  4. Step 4: Simplify right side
    21,853.14x = 402,912,635.37
  5. Step 5: Solve for x
    x = 402,912,635.37/21,853.14
  6. Step 6: Final answer
    x = 18,437.29

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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.