Home / 13,509.23-18,642.75-7,540.89

Finding the Fourth Proportional to 13,509.23, 18,642.75 and 7,540.89

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Solution

The fourth proportional to 13,509.23, 18,642.75 and 7,540.89 is: 10,406.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.23 : 18,642.75 = 7,540.89 : x
  2. Step 2: Convert to fraction form
    13,509.23/18,642.75 = 7,540.89/x
  3. Step 3: Cross multiply
    13,509.23x = 18,642.75 × 7,540.89
  4. Step 4: Simplify right side
    13,509.23x = 140,582,927.05
  5. Step 5: Solve for x
    x = 140,582,927.05/13,509.23
  6. Step 6: Final answer
    x = 10,406.44

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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.