Home / 30,902.14-42,665.43-18,330.94

Finding the Fourth Proportional to 30,902.14, 42,665.43 and 18,330.94

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Solution

The fourth proportional to 30,902.14, 42,665.43 and 18,330.94 is: 25,308.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902.14 : 42,665.43 = 18,330.94 : x
  2. Step 2: Convert to fraction form
    30,902.14/42,665.43 = 18,330.94/x
  3. Step 3: Cross multiply
    30,902.14x = 42,665.43 × 18,330.94
  4. Step 4: Simplify right side
    30,902.14x = 782,097,437.40
  5. Step 5: Solve for x
    x = 782,097,437.40/30,902.14
  6. Step 6: Final answer
    x = 25,308.84

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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.