Home / 10,670.43-14,720.61-6,420.36

Finding the Fourth Proportional to 10,670.43, 14,720.61 and 6,420.36

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Solution

The fourth proportional to 10,670.43, 14,720.61 and 6,420.36 is: 8,857.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,670.43 : 14,720.61 = 6,420.36 : x
  2. Step 2: Convert to fraction form
    10,670.43/14,720.61 = 6,420.36/x
  3. Step 3: Cross multiply
    10,670.43x = 14,720.61 × 6,420.36
  4. Step 4: Simplify right side
    10,670.43x = 94,511,615.62
  5. Step 5: Solve for x
    x = 94,511,615.62/10,670.43
  6. Step 6: Final answer
    x = 8,857.34

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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.