Home / 21,740.70-32,609.95-12,739.91

Finding the Fourth Proportional to 21,740.70, 32,609.95 and 12,739.91

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Solution

The fourth proportional to 21,740.70, 32,609.95 and 12,739.91 is: 19,109.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.70 : 32,609.95 = 12,739.91 : x
  2. Step 2: Convert to fraction form
    21,740.70/32,609.95 = 12,739.91/x
  3. Step 3: Cross multiply
    21,740.70x = 32,609.95 × 12,739.91
  4. Step 4: Simplify right side
    21,740.70x = 415,447,814.50
  5. Step 5: Solve for x
    x = 415,447,814.50/21,740.70
  6. Step 6: Final answer
    x = 19,109.22

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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.