Home / 9,150.45-13,721.31-4,218.63

Finding the Fourth Proportional to 9,150.45, 13,721.31 and 4,218.63

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Solution

The fourth proportional to 9,150.45, 13,721.31 and 4,218.63 is: 6,325.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,150.45 : 13,721.31 = 4,218.63 : x
  2. Step 2: Convert to fraction form
    9,150.45/13,721.31 = 4,218.63/x
  3. Step 3: Cross multiply
    9,150.45x = 13,721.31 × 4,218.63
  4. Step 4: Simplify right side
    9,150.45x = 57,885,130.01
  5. Step 5: Solve for x
    x = 57,885,130.01/9,150.45
  6. Step 6: Final answer
    x = 6,325.93

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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.