Home / 13,783.34-18,998.88-9,305.66

Finding the Fourth Proportional to 13,783.34, 18,998.88 and 9,305.66

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Solution

The fourth proportional to 13,783.34, 18,998.88 and 9,305.66 is: 12,826.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.34 : 18,998.88 = 9,305.66 : x
  2. Step 2: Convert to fraction form
    13,783.34/18,998.88 = 9,305.66/x
  3. Step 3: Cross multiply
    13,783.34x = 18,998.88 × 9,305.66
  4. Step 4: Simplify right side
    13,783.34x = 176,797,117.66
  5. Step 5: Solve for x
    x = 176,797,117.66/13,783.34
  6. Step 6: Final answer
    x = 12,826.87

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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.