Home / 19,869.66-27,420.46-10,917.54

Finding the Fourth Proportional to 19,869.66, 27,420.46 and 10,917.54

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Solution

The fourth proportional to 19,869.66, 27,420.46 and 10,917.54 is: 15,066.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.66 : 27,420.46 = 10,917.54 : x
  2. Step 2: Convert to fraction form
    19,869.66/27,420.46 = 10,917.54/x
  3. Step 3: Cross multiply
    19,869.66x = 27,420.46 × 10,917.54
  4. Step 4: Simplify right side
    19,869.66x = 299,363,941.57
  5. Step 5: Solve for x
    x = 299,363,941.57/19,869.66
  6. Step 6: Final answer
    x = 15,066.38

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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.