Home / 19,623.40-29,442.96-7,144.28

Finding the Fourth Proportional to 19,623.40, 29,442.96 and 7,144.28

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Solution

The fourth proportional to 19,623.40, 29,442.96 and 7,144.28 is: 10,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,623.40 : 29,442.96 = 7,144.28 : x
  2. Step 2: Convert to fraction form
    19,623.40/29,442.96 = 7,144.28/x
  3. Step 3: Cross multiply
    19,623.40x = 29,442.96 × 7,144.28
  4. Step 4: Simplify right side
    19,623.40x = 210,348,879.08
  5. Step 5: Solve for x
    x = 210,348,879.08/19,623.40
  6. Step 6: Final answer
    x = 10,719.29

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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.