Home / 20,861.88-31,292.91-6,070.86

Finding the Fourth Proportional to 20,861.88, 31,292.91 and 6,070.86

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Solution

The fourth proportional to 20,861.88, 31,292.91 and 6,070.86 is: 9,106.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.88 : 31,292.91 = 6,070.86 : x
  2. Step 2: Convert to fraction form
    20,861.88/31,292.91 = 6,070.86/x
  3. Step 3: Cross multiply
    20,861.88x = 31,292.91 × 6,070.86
  4. Step 4: Simplify right side
    20,861.88x = 189,974,875.60
  5. Step 5: Solve for x
    x = 189,974,875.60/20,861.88
  6. Step 6: Final answer
    x = 9,106.32

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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.