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Finding the Fourth Proportional to 19,011.52, 28,493.52 and 9,148.15

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Solution

The fourth proportional to 19,011.52, 28,493.52 and 9,148.15 is: 13,710.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,011.52 : 28,493.52 = 9,148.15 : x
  2. Step 2: Convert to fraction form
    19,011.52/28,493.52 = 9,148.15/x
  3. Step 3: Cross multiply
    19,011.52x = 28,493.52 × 9,148.15
  4. Step 4: Simplify right side
    19,011.52x = 260,662,994.99
  5. Step 5: Solve for x
    x = 260,662,994.99/19,011.52
  6. Step 6: Final answer
    x = 13,710.79

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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.