Home / 21,864.58-30,175.68-12,434.56

Finding the Fourth Proportional to 21,864.58, 30,175.68 and 12,434.56

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Solution

The fourth proportional to 21,864.58, 30,175.68 and 12,434.56 is: 17,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.58 : 30,175.68 = 12,434.56 : x
  2. Step 2: Convert to fraction form
    21,864.58/30,175.68 = 12,434.56/x
  3. Step 3: Cross multiply
    21,864.58x = 30,175.68 × 12,434.56
  4. Step 4: Simplify right side
    21,864.58x = 375,221,303.50
  5. Step 5: Solve for x
    x = 375,221,303.50/21,864.58
  6. Step 6: Final answer
    x = 17,161.15

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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.