Home / 21,080.99-29,095.85-13,536.86

Finding the Fourth Proportional to 21,080.99, 29,095.85 and 13,536.86

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Solution

The fourth proportional to 21,080.99, 29,095.85 and 13,536.86 is: 18,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.99 : 29,095.85 = 13,536.86 : x
  2. Step 2: Convert to fraction form
    21,080.99/29,095.85 = 13,536.86/x
  3. Step 3: Cross multiply
    21,080.99x = 29,095.85 × 13,536.86
  4. Step 4: Simplify right side
    21,080.99x = 393,866,336.39
  5. Step 5: Solve for x
    x = 393,866,336.39/21,080.99
  6. Step 6: Final answer
    x = 18,683.48

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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.