Home / 30,842.05-42,563.06-18,903.09

Finding the Fourth Proportional to 30,842.05, 42,563.06 and 18,903.09

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Solution

The fourth proportional to 30,842.05, 42,563.06 and 18,903.09 is: 26,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,842.05 : 42,563.06 = 18,903.09 : x
  2. Step 2: Convert to fraction form
    30,842.05/42,563.06 = 18,903.09/x
  3. Step 3: Cross multiply
    30,842.05x = 42,563.06 × 18,903.09
  4. Step 4: Simplify right side
    30,842.05x = 804,573,353.86
  5. Step 5: Solve for x
    x = 804,573,353.86/30,842.05
  6. Step 6: Final answer
    x = 26,086.90

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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.