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Finding the Fourth Proportional to 13,303.70, 18,358.48 and 7,634.51

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Solution

The fourth proportional to 13,303.70, 18,358.48 and 7,634.51 is: 10,535.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,303.70 : 18,358.48 = 7,634.51 : x
  2. Step 2: Convert to fraction form
    13,303.70/18,358.48 = 7,634.51/x
  3. Step 3: Cross multiply
    13,303.70x = 18,358.48 × 7,634.51
  4. Step 4: Simplify right side
    13,303.70x = 140,157,999.14
  5. Step 5: Solve for x
    x = 140,157,999.14/13,303.70
  6. Step 6: Final answer
    x = 10,535.26

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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.