Home / 20,047.42-30,070.86-11,779.89

Finding the Fourth Proportional to 20,047.42, 30,070.86 and 11,779.89

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Solution

The fourth proportional to 20,047.42, 30,070.86 and 11,779.89 is: 17,669.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.42 : 30,070.86 = 11,779.89 : x
  2. Step 2: Convert to fraction form
    20,047.42/30,070.86 = 11,779.89/x
  3. Step 3: Cross multiply
    20,047.42x = 30,070.86 × 11,779.89
  4. Step 4: Simplify right side
    20,047.42x = 354,231,423.01
  5. Step 5: Solve for x
    x = 354,231,423.01/20,047.42
  6. Step 6: Final answer
    x = 17,669.68

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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.