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Finding the Fourth Proportional to 19,008.71, 28,493.28 and 7,154.34

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Solution

The fourth proportional to 19,008.71, 28,493.28 and 7,154.34 is: 10,724.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.71 : 28,493.28 = 7,154.34 : x
  2. Step 2: Convert to fraction form
    19,008.71/28,493.28 = 7,154.34/x
  3. Step 3: Cross multiply
    19,008.71x = 28,493.28 × 7,154.34
  4. Step 4: Simplify right side
    19,008.71x = 203,850,612.84
  5. Step 5: Solve for x
    x = 203,850,612.84/19,008.71
  6. Step 6: Final answer
    x = 10,724.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.