Home / 20,370.08-30,416.50-17,978.24

Finding the Fourth Proportional to 20,370.08, 30,416.50 and 17,978.24

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Solution

The fourth proportional to 20,370.08, 30,416.50 and 17,978.24 is: 26,845.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.08 : 30,416.50 = 17,978.24 : x
  2. Step 2: Convert to fraction form
    20,370.08/30,416.50 = 17,978.24/x
  3. Step 3: Cross multiply
    20,370.08x = 30,416.50 × 17,978.24
  4. Step 4: Simplify right side
    20,370.08x = 546,835,136.96
  5. Step 5: Solve for x
    x = 546,835,136.96/20,370.08
  6. Step 6: Final answer
    x = 26,845.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.