Home / 13,785.72-19,018.80-9,004.05

Finding the Fourth Proportional to 13,785.72, 19,018.80 and 9,004.05

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Solution

The fourth proportional to 13,785.72, 19,018.80 and 9,004.05 is: 12,422.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.72 : 19,018.80 = 9,004.05 : x
  2. Step 2: Convert to fraction form
    13,785.72/19,018.80 = 9,004.05/x
  3. Step 3: Cross multiply
    13,785.72x = 19,018.80 × 9,004.05
  4. Step 4: Simplify right side
    13,785.72x = 171,246,226.14
  5. Step 5: Solve for x
    x = 171,246,226.14/13,785.72
  6. Step 6: Final answer
    x = 12,422.00

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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.