Home / 13,663.89-20,476.91-7,808.13

Finding the Fourth Proportional to 13,663.89, 20,476.91 and 7,808.13

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Solution

The fourth proportional to 13,663.89, 20,476.91 and 7,808.13 is: 11,701.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.89 : 20,476.91 = 7,808.13 : x
  2. Step 2: Convert to fraction form
    13,663.89/20,476.91 = 7,808.13/x
  3. Step 3: Cross multiply
    13,663.89x = 20,476.91 × 7,808.13
  4. Step 4: Simplify right side
    13,663.89x = 159,886,336.24
  5. Step 5: Solve for x
    x = 159,886,336.24/13,663.89
  6. Step 6: Final answer
    x = 11,701.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.