Home / 13,310.86-18,370.28-9,947.84

Finding the Fourth Proportional to 13,310.86, 18,370.28 and 9,947.84

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Solution

The fourth proportional to 13,310.86, 18,370.28 and 9,947.84 is: 13,728.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.86 : 18,370.28 = 9,947.84 : x
  2. Step 2: Convert to fraction form
    13,310.86/18,370.28 = 9,947.84/x
  3. Step 3: Cross multiply
    13,310.86x = 18,370.28 × 9,947.84
  4. Step 4: Simplify right side
    13,310.86x = 182,744,606.20
  5. Step 5: Solve for x
    x = 182,744,606.20/13,310.86
  6. Step 6: Final answer
    x = 13,728.99

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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.