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Finding the Fourth Proportional to 18,447, 25,457.40 and 10,064.04

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Solution

The fourth proportional to 18,447, 25,457.40 and 10,064.04 is: 13,888.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447 : 25,457.40 = 10,064.04 : x
  2. Step 2: Convert to fraction form
    18,447/25,457.40 = 10,064.04/x
  3. Step 3: Cross multiply
    18,447x = 25,457.40 × 10,064.04
  4. Step 4: Simplify right side
    18,447x = 256,204,291.90
  5. Step 5: Solve for x
    x = 256,204,291.90/18,447
  6. Step 6: Final answer
    x = 13,888.67

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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.