Home / 28,443.78-42,679.04-17,911.35

Finding the Fourth Proportional to 28,443.78, 42,679.04 and 17,911.35

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Solution

The fourth proportional to 28,443.78, 42,679.04 and 17,911.35 is: 26,875.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.78 : 42,679.04 = 17,911.35 : x
  2. Step 2: Convert to fraction form
    28,443.78/42,679.04 = 17,911.35/x
  3. Step 3: Cross multiply
    28,443.78x = 42,679.04 × 17,911.35
  4. Step 4: Simplify right side
    28,443.78x = 764,439,133.55
  5. Step 5: Solve for x
    x = 764,439,133.55/28,443.78
  6. Step 6: Final answer
    x = 26,875.44

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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.