Home / 13,525.47-18,665.28-8,148.56

Finding the Fourth Proportional to 13,525.47, 18,665.28 and 8,148.56

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Solution

The fourth proportional to 13,525.47, 18,665.28 and 8,148.56 is: 11,245.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,525.47 : 18,665.28 = 8,148.56 : x
  2. Step 2: Convert to fraction form
    13,525.47/18,665.28 = 8,148.56/x
  3. Step 3: Cross multiply
    13,525.47x = 18,665.28 × 8,148.56
  4. Step 4: Simplify right side
    13,525.47x = 152,095,060.67
  5. Step 5: Solve for x
    x = 152,095,060.67/13,525.47
  6. Step 6: Final answer
    x = 11,245.09

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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.