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Finding the Fourth Proportional to 13,303.79, 18,354.09 and 7,636.49

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Solution

The fourth proportional to 13,303.79, 18,354.09 and 7,636.49 is: 10,535.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,303.79 : 18,354.09 = 7,636.49 : x
  2. Step 2: Convert to fraction form
    13,303.79/18,354.09 = 7,636.49/x
  3. Step 3: Cross multiply
    13,303.79x = 18,354.09 × 7,636.49
  4. Step 4: Simplify right side
    13,303.79x = 140,160,824.74
  5. Step 5: Solve for x
    x = 140,160,824.74/13,303.79
  6. Step 6: Final answer
    x = 10,535.41

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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.