Home / 19,919.31-29,897.39-10,065.49

Finding the Fourth Proportional to 19,919.31, 29,897.39 and 10,065.49

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Solution

The fourth proportional to 19,919.31, 29,897.39 and 10,065.49 is: 15,107.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.31 : 29,897.39 = 10,065.49 : x
  2. Step 2: Convert to fraction form
    19,919.31/29,897.39 = 10,065.49/x
  3. Step 3: Cross multiply
    19,919.31x = 29,897.39 × 10,065.49
  4. Step 4: Simplify right side
    19,919.31x = 300,931,880.07
  5. Step 5: Solve for x
    x = 300,931,880.07/19,919.31
  6. Step 6: Final answer
    x = 15,107.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.