Home / 19,099.71-26,359.20-11,142.45

Finding the Fourth Proportional to 19,099.71, 26,359.20 and 11,142.45

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Solution

The fourth proportional to 19,099.71, 26,359.20 and 11,142.45 is: 15,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,099.71 : 26,359.20 = 11,142.45 : x
  2. Step 2: Convert to fraction form
    19,099.71/26,359.20 = 11,142.45/x
  3. Step 3: Cross multiply
    19,099.71x = 26,359.20 × 11,142.45
  4. Step 4: Simplify right side
    19,099.71x = 293,706,068.04
  5. Step 5: Solve for x
    x = 293,706,068.04/19,099.71
  6. Step 6: Final answer
    x = 15,377.51

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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.