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Finding the Fourth Proportional to 10,398.74, 14,360.74 and 6,623.60

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Solution

The fourth proportional to 10,398.74, 14,360.74 and 6,623.60 is: 9,147.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,398.74 : 14,360.74 = 6,623.60 : x
  2. Step 2: Convert to fraction form
    10,398.74/14,360.74 = 6,623.60/x
  3. Step 3: Cross multiply
    10,398.74x = 14,360.74 × 6,623.60
  4. Step 4: Simplify right side
    10,398.74x = 95,119,709.10
  5. Step 5: Solve for x
    x = 95,119,709.10/10,398.74
  6. Step 6: Final answer
    x = 9,147.24

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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.