Home / 30,990.78-46,427.58-17,803.17

Finding the Fourth Proportional to 30,990.78, 46,427.58 and 17,803.17

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Solution

The fourth proportional to 30,990.78, 46,427.58 and 17,803.17 is: 26,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.78 : 46,427.58 = 17,803.17 : x
  2. Step 2: Convert to fraction form
    30,990.78/46,427.58 = 17,803.17/x
  3. Step 3: Cross multiply
    30,990.78x = 46,427.58 × 17,803.17
  4. Step 4: Simplify right side
    30,990.78x = 826,558,099.43
  5. Step 5: Solve for x
    x = 826,558,099.43/30,990.78
  6. Step 6: Final answer
    x = 26,671.10

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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.