Home / 13,288.86-18,346.50-11,812.77

Finding the Fourth Proportional to 13,288.86, 18,346.50 and 11,812.77

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Solution

The fourth proportional to 13,288.86, 18,346.50 and 11,812.77 is: 16,308.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.86 : 18,346.50 = 11,812.77 : x
  2. Step 2: Convert to fraction form
    13,288.86/18,346.50 = 11,812.77/x
  3. Step 3: Cross multiply
    13,288.86x = 18,346.50 × 11,812.77
  4. Step 4: Simplify right side
    13,288.86x = 216,722,984.81
  5. Step 5: Solve for x
    x = 216,722,984.81/13,288.86
  6. Step 6: Final answer
    x = 16,308.62

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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.