Home / 20,070.72-27,698.76-11,117.99

Finding the Fourth Proportional to 20,070.72, 27,698.76 and 11,117.99

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Solution

The fourth proportional to 20,070.72, 27,698.76 and 11,117.99 is: 15,343.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.72 : 27,698.76 = 11,117.99 : x
  2. Step 2: Convert to fraction form
    20,070.72/27,698.76 = 11,117.99/x
  3. Step 3: Cross multiply
    20,070.72x = 27,698.76 × 11,117.99
  4. Step 4: Simplify right side
    20,070.72x = 307,954,605.94
  5. Step 5: Solve for x
    x = 307,954,605.94/20,070.72
  6. Step 6: Final answer
    x = 15,343.48

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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.