Home / 19,866.84-27,415.59-10,913.78

Finding the Fourth Proportional to 19,866.84, 27,415.59 and 10,913.78

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Solution

The fourth proportional to 19,866.84, 27,415.59 and 10,913.78 is: 15,060.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.84 : 27,415.59 = 10,913.78 : x
  2. Step 2: Convert to fraction form
    19,866.84/27,415.59 = 10,913.78/x
  3. Step 3: Cross multiply
    19,866.84x = 27,415.59 × 10,913.78
  4. Step 4: Simplify right side
    19,866.84x = 299,207,652.62
  5. Step 5: Solve for x
    x = 299,207,652.62/19,866.84
  6. Step 6: Final answer
    x = 15,060.66

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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.