Home / 13,630.86-18,809.66-7,663.46

Finding the Fourth Proportional to 13,630.86, 18,809.66 and 7,663.46

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Solution

The fourth proportional to 13,630.86, 18,809.66 and 7,663.46 is: 10,575.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.86 : 18,809.66 = 7,663.46 : x
  2. Step 2: Convert to fraction form
    13,630.86/18,809.66 = 7,663.46/x
  3. Step 3: Cross multiply
    13,630.86x = 18,809.66 × 7,663.46
  4. Step 4: Simplify right side
    13,630.86x = 144,147,010.84
  5. Step 5: Solve for x
    x = 144,147,010.84/13,630.86
  6. Step 6: Final answer
    x = 10,575.05

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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.