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Finding the Fourth Proportional to 13,622.60, 18,802.02 and 8,035.40

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Solution

The fourth proportional to 13,622.60, 18,802.02 and 8,035.40 is: 11,090.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.60 : 18,802.02 = 8,035.40 : x
  2. Step 2: Convert to fraction form
    13,622.60/18,802.02 = 8,035.40/x
  3. Step 3: Cross multiply
    13,622.60x = 18,802.02 × 8,035.40
  4. Step 4: Simplify right side
    13,622.60x = 151,081,751.51
  5. Step 5: Solve for x
    x = 151,081,751.51/13,622.60
  6. Step 6: Final answer
    x = 11,090.52

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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.