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Finding the Fourth Proportional to 12,313.70, 18,470.55 and 10,904.30

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Solution

The fourth proportional to 12,313.70, 18,470.55 and 10,904.30 is: 16,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.70 : 18,470.55 = 10,904.30 : x
  2. Step 2: Convert to fraction form
    12,313.70/18,470.55 = 10,904.30/x
  3. Step 3: Cross multiply
    12,313.70x = 18,470.55 × 10,904.30
  4. Step 4: Simplify right side
    12,313.70x = 201,408,418.37
  5. Step 5: Solve for x
    x = 201,408,418.37/12,313.70
  6. Step 6: Final answer
    x = 16,356.45

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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.