Home / 30,285.28-45,398.76-19,158.04

Finding the Fourth Proportional to 30,285.28, 45,398.76 and 19,158.04

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Solution

The fourth proportional to 30,285.28, 45,398.76 and 19,158.04 is: 28,718.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.28 : 45,398.76 = 19,158.04 : x
  2. Step 2: Convert to fraction form
    30,285.28/45,398.76 = 19,158.04/x
  3. Step 3: Cross multiply
    30,285.28x = 45,398.76 × 19,158.04
  4. Step 4: Simplify right side
    30,285.28x = 869,751,260.03
  5. Step 5: Solve for x
    x = 869,751,260.03/30,285.28
  6. Step 6: Final answer
    x = 28,718.61

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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.