Home / 14,389.20-19,849.32-9,905.04

Finding the Fourth Proportional to 14,389.20, 19,849.32 and 9,905.04

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Solution

The fourth proportional to 14,389.20, 19,849.32 and 9,905.04 is: 13,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,389.20 : 19,849.32 = 9,905.04 : x
  2. Step 2: Convert to fraction form
    14,389.20/19,849.32 = 9,905.04/x
  3. Step 3: Cross multiply
    14,389.20x = 19,849.32 × 9,905.04
  4. Step 4: Simplify right side
    14,389.20x = 196,608,308.57
  5. Step 5: Solve for x
    x = 196,608,308.57/14,389.20
  6. Step 6: Final answer
    x = 13,663.60

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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.