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Finding the Fourth Proportional to 18,365.01, 25,343.58 and 9,981.51

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Solution

The fourth proportional to 18,365.01, 25,343.58 and 9,981.51 is: 13,774.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.01 : 25,343.58 = 9,981.51 : x
  2. Step 2: Convert to fraction form
    18,365.01/25,343.58 = 9,981.51/x
  3. Step 3: Cross multiply
    18,365.01x = 25,343.58 × 9,981.51
  4. Step 4: Simplify right side
    18,365.01x = 252,967,197.21
  5. Step 5: Solve for x
    x = 252,967,197.21/18,365.01
  6. Step 6: Final answer
    x = 13,774.41

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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.