Home / 14,280-21,420.28-3,892.02

Finding the Fourth Proportional to 14,280, 21,420.28 and 3,892.02

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Solution

The fourth proportional to 14,280, 21,420.28 and 3,892.02 is: 5,838.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280 : 21,420.28 = 3,892.02 : x
  2. Step 2: Convert to fraction form
    14,280/21,420.28 = 3,892.02/x
  3. Step 3: Cross multiply
    14,280x = 21,420.28 × 3,892.02
  4. Step 4: Simplify right side
    14,280x = 83,368,158.17
  5. Step 5: Solve for x
    x = 83,368,158.17/14,280
  6. Step 6: Final answer
    x = 5,838.11

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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.