Home / 13,722.48-20,554.56-7,864.56

Finding the Fourth Proportional to 13,722.48, 20,554.56 and 7,864.56

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Solution

The fourth proportional to 13,722.48, 20,554.56 and 7,864.56 is: 11,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.48 : 20,554.56 = 7,864.56 : x
  2. Step 2: Convert to fraction form
    13,722.48/20,554.56 = 7,864.56/x
  3. Step 3: Cross multiply
    13,722.48x = 20,554.56 × 7,864.56
  4. Step 4: Simplify right side
    13,722.48x = 161,652,570.39
  5. Step 5: Solve for x
    x = 161,652,570.39/13,722.48
  6. Step 6: Final answer
    x = 11,780.13

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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.