Home / 13,455.30-18,565.81-7,486.97

Finding the Fourth Proportional to 13,455.30, 18,565.81 and 7,486.97

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Solution

The fourth proportional to 13,455.30, 18,565.81 and 7,486.97 is: 10,330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.30 : 18,565.81 = 7,486.97 : x
  2. Step 2: Convert to fraction form
    13,455.30/18,565.81 = 7,486.97/x
  3. Step 3: Cross multiply
    13,455.30x = 18,565.81 × 7,486.97
  4. Step 4: Simplify right side
    13,455.30x = 139,001,550.95
  5. Step 5: Solve for x
    x = 139,001,550.95/13,455.30
  6. Step 6: Final answer
    x = 10,330.61

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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.