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Finding the Fourth Proportional to 18,447.36, 25,457.40 and 10,064.40

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Solution

The fourth proportional to 18,447.36, 25,457.40 and 10,064.40 is: 13,888.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.36 : 25,457.40 = 10,064.40 : x
  2. Step 2: Convert to fraction form
    18,447.36/25,457.40 = 10,064.40/x
  3. Step 3: Cross multiply
    18,447.36x = 25,457.40 × 10,064.40
  4. Step 4: Simplify right side
    18,447.36x = 256,213,456.56
  5. Step 5: Solve for x
    x = 256,213,456.56/18,447.36
  6. Step 6: Final answer
    x = 13,888.90

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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.