Home / 19,620.48-29,385.36-11,812.08

Finding the Fourth Proportional to 19,620.48, 29,385.36 and 11,812.08

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Solution

The fourth proportional to 19,620.48, 29,385.36 and 11,812.08 is: 17,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.48 : 29,385.36 = 11,812.08 : x
  2. Step 2: Convert to fraction form
    19,620.48/29,385.36 = 11,812.08/x
  3. Step 3: Cross multiply
    19,620.48x = 29,385.36 × 11,812.08
  4. Step 4: Simplify right side
    19,620.48x = 347,102,223.15
  5. Step 5: Solve for x
    x = 347,102,223.15/19,620.48
  6. Step 6: Final answer
    x = 17,690.81

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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.