Home / 19,011.71-28,497.78-7,157.35

Finding the Fourth Proportional to 19,011.71, 28,497.78 and 7,157.35

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Solution

The fourth proportional to 19,011.71, 28,497.78 and 7,157.35 is: 10,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,011.71 : 28,497.78 = 7,157.35 : x
  2. Step 2: Convert to fraction form
    19,011.71/28,497.78 = 7,157.35/x
  3. Step 3: Cross multiply
    19,011.71x = 28,497.78 × 7,157.35
  4. Step 4: Simplify right side
    19,011.71x = 203,968,585.68
  5. Step 5: Solve for x
    x = 203,968,585.68/19,011.71
  6. Step 6: Final answer
    x = 10,728.58

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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.