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Finding the Fourth Proportional to 10,668.90, 14,720.13 and 6,892.22

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Solution

The fourth proportional to 10,668.90, 14,720.13 and 6,892.22 is: 9,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,668.90 : 14,720.13 = 6,892.22 : x
  2. Step 2: Convert to fraction form
    10,668.90/14,720.13 = 6,892.22/x
  3. Step 3: Cross multiply
    10,668.90x = 14,720.13 × 6,892.22
  4. Step 4: Simplify right side
    10,668.90x = 101,454,300.79
  5. Step 5: Solve for x
    x = 101,454,300.79/10,668.90
  6. Step 6: Final answer
    x = 9,509.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.