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Finding the Fourth Proportional to 15,392.40, 23,083.20 and 7,994.40

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Solution

The fourth proportional to 15,392.40, 23,083.20 and 7,994.40 is: 11,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,392.40 : 23,083.20 = 7,994.40 : x
  2. Step 2: Convert to fraction form
    15,392.40/23,083.20 = 7,994.40/x
  3. Step 3: Cross multiply
    15,392.40x = 23,083.20 × 7,994.40
  4. Step 4: Simplify right side
    15,392.40x = 184,536,334.08
  5. Step 5: Solve for x
    x = 184,536,334.08/15,392.40
  6. Step 6: Final answer
    x = 11,988.80

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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.