Home / 21,066.20-29,037.32-18,333.74

Finding the Fourth Proportional to 21,066.20, 29,037.32 and 18,333.74

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Solution

The fourth proportional to 21,066.20, 29,037.32 and 18,333.74 is: 25,270.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.20 : 29,037.32 = 18,333.74 : x
  2. Step 2: Convert to fraction form
    21,066.20/29,037.32 = 18,333.74/x
  3. Step 3: Cross multiply
    21,066.20x = 29,037.32 × 18,333.74
  4. Step 4: Simplify right side
    21,066.20x = 532,362,675.18
  5. Step 5: Solve for x
    x = 532,362,675.18/21,066.20
  6. Step 6: Final answer
    x = 25,270.94

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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.