Home / 21,863.05-30,170.34-12,303.47

Finding the Fourth Proportional to 21,863.05, 30,170.34 and 12,303.47

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Solution

The fourth proportional to 21,863.05, 30,170.34 and 12,303.47 is: 16,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.05 : 30,170.34 = 12,303.47 : x
  2. Step 2: Convert to fraction form
    21,863.05/30,170.34 = 12,303.47/x
  3. Step 3: Cross multiply
    21,863.05x = 30,170.34 × 12,303.47
  4. Step 4: Simplify right side
    21,863.05x = 371,199,873.08
  5. Step 5: Solve for x
    x = 371,199,873.08/21,863.05
  6. Step 6: Final answer
    x = 16,978.41

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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.