Home / 14,390.10-19,858.10-8,422.02

Finding the Fourth Proportional to 14,390.10, 19,858.10 and 8,422.02

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Solution

The fourth proportional to 14,390.10, 19,858.10 and 8,422.02 is: 11,622.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.10 : 19,858.10 = 8,422.02 : x
  2. Step 2: Convert to fraction form
    14,390.10/19,858.10 = 8,422.02/x
  3. Step 3: Cross multiply
    14,390.10x = 19,858.10 × 8,422.02
  4. Step 4: Simplify right side
    14,390.10x = 167,245,273.25
  5. Step 5: Solve for x
    x = 167,245,273.25/14,390.10
  6. Step 6: Final answer
    x = 11,622.25

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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.