Home / 20,070.32-27,696.99-11,117.81

Finding the Fourth Proportional to 20,070.32, 27,696.99 and 11,117.81

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Solution

The fourth proportional to 20,070.32, 27,696.99 and 11,117.81 is: 15,342.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.32 : 27,696.99 = 11,117.81 : x
  2. Step 2: Convert to fraction form
    20,070.32/27,696.99 = 11,117.81/x
  3. Step 3: Cross multiply
    20,070.32x = 27,696.99 × 11,117.81
  4. Step 4: Simplify right side
    20,070.32x = 307,929,733.91
  5. Step 5: Solve for x
    x = 307,929,733.91/20,070.32
  6. Step 6: Final answer
    x = 15,342.55

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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.