Home / 19,019.81-28,529.75-5,168.81

Finding the Fourth Proportional to 19,019.81, 28,529.75 and 5,168.81

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Solution

The fourth proportional to 19,019.81, 28,529.75 and 5,168.81 is: 7,753.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.81 : 28,529.75 = 5,168.81 : x
  2. Step 2: Convert to fraction form
    19,019.81/28,529.75 = 5,168.81/x
  3. Step 3: Cross multiply
    19,019.81x = 28,529.75 × 5,168.81
  4. Step 4: Simplify right side
    19,019.81x = 147,464,941.34
  5. Step 5: Solve for x
    x = 147,464,941.34/19,019.81
  6. Step 6: Final answer
    x = 7,753.23

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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.