Home / 30,068.28-45,063.38-12,278.11

Finding the Fourth Proportional to 30,068.28, 45,063.38 and 12,278.11

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Solution

The fourth proportional to 30,068.28, 45,063.38 and 12,278.11 is: 18,401.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,068.28 : 45,063.38 = 12,278.11 : x
  2. Step 2: Convert to fraction form
    30,068.28/45,063.38 = 12,278.11/x
  3. Step 3: Cross multiply
    30,068.28x = 45,063.38 × 12,278.11
  4. Step 4: Simplify right side
    30,068.28x = 553,293,136.61
  5. Step 5: Solve for x
    x = 553,293,136.61/30,068.28
  6. Step 6: Final answer
    x = 18,401.22

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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.