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Finding the Fourth Proportional to 13,305.16, 18,360.92 and 7,337.40

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Solution

The fourth proportional to 13,305.16, 18,360.92 and 7,337.40 is: 10,125.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.16 : 18,360.92 = 7,337.40 : x
  2. Step 2: Convert to fraction form
    13,305.16/18,360.92 = 7,337.40/x
  3. Step 3: Cross multiply
    13,305.16x = 18,360.92 × 7,337.40
  4. Step 4: Simplify right side
    13,305.16x = 134,721,414.41
  5. Step 5: Solve for x
    x = 134,721,414.41/13,305.16
  6. Step 6: Final answer
    x = 10,125.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.