Home / 22,178.90-30,602.31-12,745.64

Finding the Fourth Proportional to 22,178.90, 30,602.31 and 12,745.64

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Solution

The fourth proportional to 22,178.90, 30,602.31 and 12,745.64 is: 17,586.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,178.90 : 30,602.31 = 12,745.64 : x
  2. Step 2: Convert to fraction form
    22,178.90/30,602.31 = 12,745.64/x
  3. Step 3: Cross multiply
    22,178.90x = 30,602.31 × 12,745.64
  4. Step 4: Simplify right side
    22,178.90x = 390,045,873.42
  5. Step 5: Solve for x
    x = 390,045,873.42/22,178.90
  6. Step 6: Final answer
    x = 17,586.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.