Home / 30,359.72-41,899.40-18,422.12

Finding the Fourth Proportional to 30,359.72, 41,899.40 and 18,422.12

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Solution

The fourth proportional to 30,359.72, 41,899.40 and 18,422.12 is: 25,424.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,359.72 : 41,899.40 = 18,422.12 : x
  2. Step 2: Convert to fraction form
    30,359.72/41,899.40 = 18,422.12/x
  3. Step 3: Cross multiply
    30,359.72x = 41,899.40 × 18,422.12
  4. Step 4: Simplify right side
    30,359.72x = 771,875,774.73
  5. Step 5: Solve for x
    x = 771,875,774.73/30,359.72
  6. Step 6: Final answer
    x = 25,424.34

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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.