Home / 13,615.18-18,790.98-8,313.07

Finding the Fourth Proportional to 13,615.18, 18,790.98 and 8,313.07

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Solution

The fourth proportional to 13,615.18, 18,790.98 and 8,313.07 is: 11,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.18 : 18,790.98 = 8,313.07 : x
  2. Step 2: Convert to fraction form
    13,615.18/18,790.98 = 8,313.07/x
  3. Step 3: Cross multiply
    13,615.18x = 18,790.98 × 8,313.07
  4. Step 4: Simplify right side
    13,615.18x = 156,210,732.11
  5. Step 5: Solve for x
    x = 156,210,732.11/13,615.18
  6. Step 6: Final answer
    x = 11,473.28

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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.