Home / 10,397.88-14,356.44-6,420.24

Finding the Fourth Proportional to 10,397.88, 14,356.44 and 6,420.24

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Solution

The fourth proportional to 10,397.88, 14,356.44 and 6,420.24 is: 8,864.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,397.88 : 14,356.44 = 6,420.24 : x
  2. Step 2: Convert to fraction form
    10,397.88/14,356.44 = 6,420.24/x
  3. Step 3: Cross multiply
    10,397.88x = 14,356.44 × 6,420.24
  4. Step 4: Simplify right side
    10,397.88x = 92,171,790.35
  5. Step 5: Solve for x
    x = 92,171,790.35/10,397.88
  6. Step 6: Final answer
    x = 8,864.48

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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.