Home / 30,156.64-45,221.76-12,375.10

Finding the Fourth Proportional to 30,156.64, 45,221.76 and 12,375.10

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Solution

The fourth proportional to 30,156.64, 45,221.76 and 12,375.10 is: 18,557.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.64 : 45,221.76 = 12,375.10 : x
  2. Step 2: Convert to fraction form
    30,156.64/45,221.76 = 12,375.10/x
  3. Step 3: Cross multiply
    30,156.64x = 45,221.76 × 12,375.10
  4. Step 4: Simplify right side
    30,156.64x = 559,623,881.91
  5. Step 5: Solve for x
    x = 559,623,881.91/30,156.64
  6. Step 6: Final answer
    x = 18,557.24

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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.