Home / 13,293.86-18,353.40-11,817.78

Finding the Fourth Proportional to 13,293.86, 18,353.40 and 11,817.78

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Solution

The fourth proportional to 13,293.86, 18,353.40 and 11,817.78 is: 16,315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,293.86 : 18,353.40 = 11,817.78 : x
  2. Step 2: Convert to fraction form
    13,293.86/18,353.40 = 11,817.78/x
  3. Step 3: Cross multiply
    13,293.86x = 18,353.40 × 11,817.78
  4. Step 4: Simplify right side
    13,293.86x = 216,896,443.45
  5. Step 5: Solve for x
    x = 216,896,443.45/13,293.86
  6. Step 6: Final answer
    x = 16,315.54

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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.