Home / 21,350.54-29,470.01-12,402.07

Finding the Fourth Proportional to 21,350.54, 29,470.01 and 12,402.07

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Solution

The fourth proportional to 21,350.54, 29,470.01 and 12,402.07 is: 17,118.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.54 : 29,470.01 = 12,402.07 : x
  2. Step 2: Convert to fraction form
    21,350.54/29,470.01 = 12,402.07/x
  3. Step 3: Cross multiply
    21,350.54x = 29,470.01 × 12,402.07
  4. Step 4: Simplify right side
    21,350.54x = 365,488,991.24
  5. Step 5: Solve for x
    x = 365,488,991.24/21,350.54
  6. Step 6: Final answer
    x = 17,118.49

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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.