Home / 21,470.50-29,619.21-15,186.34

Finding the Fourth Proportional to 21,470.50, 29,619.21 and 15,186.34

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Solution

The fourth proportional to 21,470.50, 29,619.21 and 15,186.34 is: 20,950.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.50 : 29,619.21 = 15,186.34 : x
  2. Step 2: Convert to fraction form
    21,470.50/29,619.21 = 15,186.34/x
  3. Step 3: Cross multiply
    21,470.50x = 29,619.21 × 15,186.34
  4. Step 4: Simplify right side
    21,470.50x = 449,807,393.59
  5. Step 5: Solve for x
    x = 449,807,393.59/21,470.50
  6. Step 6: Final answer
    x = 20,950.02

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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.