Home / 19,869.83-27,420.38-10,917.91

Finding the Fourth Proportional to 19,869.83, 27,420.38 and 10,917.91

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Solution

The fourth proportional to 19,869.83, 27,420.38 and 10,917.91 is: 15,066.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.83 : 27,420.38 = 10,917.91 : x
  2. Step 2: Convert to fraction form
    19,869.83/27,420.38 = 10,917.91/x
  3. Step 3: Cross multiply
    19,869.83x = 27,420.38 × 10,917.91
  4. Step 4: Simplify right side
    19,869.83x = 299,373,261.63
  5. Step 5: Solve for x
    x = 299,373,261.63/19,869.83
  6. Step 6: Final answer
    x = 15,066.73

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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.