Home / 13,636.28-18,818.33-7,971.51

Finding the Fourth Proportional to 13,636.28, 18,818.33 and 7,971.51

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Solution

The fourth proportional to 13,636.28, 18,818.33 and 7,971.51 is: 11,000.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.28 : 18,818.33 = 7,971.51 : x
  2. Step 2: Convert to fraction form
    13,636.28/18,818.33 = 7,971.51/x
  3. Step 3: Cross multiply
    13,636.28x = 18,818.33 × 7,971.51
  4. Step 4: Simplify right side
    13,636.28x = 150,010,536.49
  5. Step 5: Solve for x
    x = 150,010,536.49/13,636.28
  6. Step 6: Final answer
    x = 11,000.84

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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.