Home / 20,575.10-30,900.30-18,840.08

Finding the Fourth Proportional to 20,575.10, 30,900.30 and 18,840.08

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Solution

The fourth proportional to 20,575.10, 30,900.30 and 18,840.08 is: 28,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.10 : 30,900.30 = 18,840.08 : x
  2. Step 2: Convert to fraction form
    20,575.10/30,900.30 = 18,840.08/x
  3. Step 3: Cross multiply
    20,575.10x = 30,900.30 × 18,840.08
  4. Step 4: Simplify right side
    20,575.10x = 582,164,124.02
  5. Step 5: Solve for x
    x = 582,164,124.02/20,575.10
  6. Step 6: Final answer
    x = 28,294.60

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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.