Home / 13,720.06-18,932.56-7,752.25

Finding the Fourth Proportional to 13,720.06, 18,932.56 and 7,752.25

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Solution

The fourth proportional to 13,720.06, 18,932.56 and 7,752.25 is: 10,697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.06 : 18,932.56 = 7,752.25 : x
  2. Step 2: Convert to fraction form
    13,720.06/18,932.56 = 7,752.25/x
  3. Step 3: Cross multiply
    13,720.06x = 18,932.56 × 7,752.25
  4. Step 4: Simplify right side
    13,720.06x = 146,769,938.26
  5. Step 5: Solve for x
    x = 146,769,938.26/13,720.06
  6. Step 6: Final answer
    x = 10,697.47

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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.