Home / 14,280.88-21,421.32-3,892.72

Finding the Fourth Proportional to 14,280.88, 21,421.32 and 3,892.72

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Solution

The fourth proportional to 14,280.88, 21,421.32 and 3,892.72 is: 5,839.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.88 : 21,421.32 = 3,892.72 : x
  2. Step 2: Convert to fraction form
    14,280.88/21,421.32 = 3,892.72/x
  3. Step 3: Cross multiply
    14,280.88x = 21,421.32 × 3,892.72
  4. Step 4: Simplify right side
    14,280.88x = 83,387,200.79
  5. Step 5: Solve for x
    x = 83,387,200.79/14,280.88
  6. Step 6: Final answer
    x = 5,839.08

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1.5x scale

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.