Home / 30,474.81-42,081.20-19,163.24

Finding the Fourth Proportional to 30,474.81, 42,081.20 and 19,163.24

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Solution

The fourth proportional to 30,474.81, 42,081.20 and 19,163.24 is: 26,461.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,474.81 : 42,081.20 = 19,163.24 : x
  2. Step 2: Convert to fraction form
    30,474.81/42,081.20 = 19,163.24/x
  3. Step 3: Cross multiply
    30,474.81x = 42,081.20 × 19,163.24
  4. Step 4: Simplify right side
    30,474.81x = 806,411,828.87
  5. Step 5: Solve for x
    x = 806,411,828.87/30,474.81
  6. Step 6: Final answer
    x = 26,461.59

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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.