Home / 20,967.45-31,453.38-10,440.08

Finding the Fourth Proportional to 20,967.45, 31,453.38 and 10,440.08

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Solution

The fourth proportional to 20,967.45, 31,453.38 and 10,440.08 is: 15,661.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.45 : 31,453.38 = 10,440.08 : x
  2. Step 2: Convert to fraction form
    20,967.45/31,453.38 = 10,440.08/x
  3. Step 3: Cross multiply
    20,967.45x = 31,453.38 × 10,440.08
  4. Step 4: Simplify right side
    20,967.45x = 328,375,803.47
  5. Step 5: Solve for x
    x = 328,375,803.47/20,967.45
  6. Step 6: Final answer
    x = 15,661.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.