Home / 19,869.84-27,420.46-10,917.56

Finding the Fourth Proportional to 19,869.84, 27,420.46 and 10,917.56

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Solution

The fourth proportional to 19,869.84, 27,420.46 and 10,917.56 is: 15,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.84 : 27,420.46 = 10,917.56 : x
  2. Step 2: Convert to fraction form
    19,869.84/27,420.46 = 10,917.56/x
  3. Step 3: Cross multiply
    19,869.84x = 27,420.46 × 10,917.56
  4. Step 4: Simplify right side
    19,869.84x = 299,364,517.28
  5. Step 5: Solve for x
    x = 299,364,517.28/19,869.84
  6. Step 6: Final answer
    x = 15,066.28

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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.