Home / 30,492.75-45,691.89-21,150.93

Finding the Fourth Proportional to 30,492.75, 45,691.89 and 21,150.93

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Solution

The fourth proportional to 30,492.75, 45,691.89 and 21,150.93 is: 31,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,492.75 : 45,691.89 = 21,150.93 : x
  2. Step 2: Convert to fraction form
    30,492.75/45,691.89 = 21,150.93/x
  3. Step 3: Cross multiply
    30,492.75x = 45,691.89 × 21,150.93
  4. Step 4: Simplify right side
    30,492.75x = 966,425,966.96
  5. Step 5: Solve for x
    x = 966,425,966.96/30,492.75
  6. Step 6: Final answer
    x = 31,693.63

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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.