Home / 21,270.86-29,352.63-11,708.88

Finding the Fourth Proportional to 21,270.86, 29,352.63 and 11,708.88

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Solution

The fourth proportional to 21,270.86, 29,352.63 and 11,708.88 is: 16,157.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.86 : 29,352.63 = 11,708.88 : x
  2. Step 2: Convert to fraction form
    21,270.86/29,352.63 = 11,708.88/x
  3. Step 3: Cross multiply
    21,270.86x = 29,352.63 × 11,708.88
  4. Step 4: Simplify right side
    21,270.86x = 343,686,422.35
  5. Step 5: Solve for x
    x = 343,686,422.35/21,270.86
  6. Step 6: Final answer
    x = 16,157.62

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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.