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Finding the Fourth Proportional to 18,447.25, 25,457.30 and 10,064.29

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Solution

The fourth proportional to 18,447.25, 25,457.30 and 10,064.29 is: 13,888.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.25 : 25,457.30 = 10,064.29 : x
  2. Step 2: Convert to fraction form
    18,447.25/25,457.30 = 10,064.29/x
  3. Step 3: Cross multiply
    18,447.25x = 25,457.30 × 10,064.29
  4. Step 4: Simplify right side
    18,447.25x = 256,209,649.82
  5. Step 5: Solve for x
    x = 256,209,649.82/18,447.25
  6. Step 6: Final answer
    x = 13,888.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.