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Finding the Fourth Proportional to 18,802.14, 25,911.24 and 13,487.76

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Solution

The fourth proportional to 18,802.14, 25,911.24 and 13,487.76 is: 18,587.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.14 : 25,911.24 = 13,487.76 : x
  2. Step 2: Convert to fraction form
    18,802.14/25,911.24 = 13,487.76/x
  3. Step 3: Cross multiply
    18,802.14x = 25,911.24 × 13,487.76
  4. Step 4: Simplify right side
    18,802.14x = 349,484,586.42
  5. Step 5: Solve for x
    x = 349,484,586.42/18,802.14
  6. Step 6: Final answer
    x = 18,587.49

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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.