Home / 13,807.66-19,055.36-8,145.72

Finding the Fourth Proportional to 13,807.66, 19,055.36 and 8,145.72

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Solution

The fourth proportional to 13,807.66, 19,055.36 and 8,145.72 is: 11,241.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.66 : 19,055.36 = 8,145.72 : x
  2. Step 2: Convert to fraction form
    13,807.66/19,055.36 = 8,145.72/x
  3. Step 3: Cross multiply
    13,807.66x = 19,055.36 × 8,145.72
  4. Step 4: Simplify right side
    13,807.66x = 155,219,627.06
  5. Step 5: Solve for x
    x = 155,219,627.06/13,807.66
  6. Step 6: Final answer
    x = 11,241.56

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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.