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Finding the Fourth Proportional to 19,334.16, 28,994.58 and 9,979.20

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Solution

The fourth proportional to 19,334.16, 28,994.58 and 9,979.20 is: 14,965.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,334.16 : 28,994.58 = 9,979.20 : x
  2. Step 2: Convert to fraction form
    19,334.16/28,994.58 = 9,979.20/x
  3. Step 3: Cross multiply
    19,334.16x = 28,994.58 × 9,979.20
  4. Step 4: Simplify right side
    19,334.16x = 289,342,712.74
  5. Step 5: Solve for x
    x = 289,342,712.74/19,334.16
  6. Step 6: Final answer
    x = 14,965.36

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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.