Home / 19,143.81-28,712.34-9,280.44

Finding the Fourth Proportional to 19,143.81, 28,712.34 and 9,280.44

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Solution

The fourth proportional to 19,143.81, 28,712.34 and 9,280.44 is: 13,919.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.81 : 28,712.34 = 9,280.44 : x
  2. Step 2: Convert to fraction form
    19,143.81/28,712.34 = 9,280.44/x
  3. Step 3: Cross multiply
    19,143.81x = 28,712.34 × 9,280.44
  4. Step 4: Simplify right side
    19,143.81x = 266,463,148.63
  5. Step 5: Solve for x
    x = 266,463,148.63/19,143.81
  6. Step 6: Final answer
    x = 13,919.02

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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.