Home / 15,340.05-21,108.58-12,814.06

Finding the Fourth Proportional to 15,340.05, 21,108.58 and 12,814.06

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Solution

The fourth proportional to 15,340.05, 21,108.58 and 12,814.06 is: 17,632.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.05 : 21,108.58 = 12,814.06 : x
  2. Step 2: Convert to fraction form
    15,340.05/21,108.58 = 12,814.06/x
  3. Step 3: Cross multiply
    15,340.05x = 21,108.58 × 12,814.06
  4. Step 4: Simplify right side
    15,340.05x = 270,486,610.63
  5. Step 5: Solve for x
    x = 270,486,610.63/15,340.05
  6. Step 6: Final answer
    x = 17,632.71

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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.