Home / 20,018.61-30,029.40-5,978.34

Finding the Fourth Proportional to 20,018.61, 30,029.40 and 5,978.34

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Solution

The fourth proportional to 20,018.61, 30,029.40 and 5,978.34 is: 8,967.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.61 : 30,029.40 = 5,978.34 : x
  2. Step 2: Convert to fraction form
    20,018.61/30,029.40 = 5,978.34/x
  3. Step 3: Cross multiply
    20,018.61x = 30,029.40 × 5,978.34
  4. Step 4: Simplify right side
    20,018.61x = 179,525,963.20
  5. Step 5: Solve for x
    x = 179,525,963.20/20,018.61
  6. Step 6: Final answer
    x = 8,967.95

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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.