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Finding the Fourth Proportional to 13,354.92, 18,430.16 and 7,305.53

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Solution

The fourth proportional to 13,354.92, 18,430.16 and 7,305.53 is: 10,081.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.92 : 18,430.16 = 7,305.53 : x
  2. Step 2: Convert to fraction form
    13,354.92/18,430.16 = 7,305.53/x
  3. Step 3: Cross multiply
    13,354.92x = 18,430.16 × 7,305.53
  4. Step 4: Simplify right side
    13,354.92x = 134,641,958.11
  5. Step 5: Solve for x
    x = 134,641,958.11/13,354.92
  6. Step 6: Final answer
    x = 10,081.82

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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.