Home / 20,559.69-30,820.91-13,166.01

Finding the Fourth Proportional to 20,559.69, 30,820.91 and 13,166.01

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Solution

The fourth proportional to 20,559.69, 30,820.91 and 13,166.01 is: 19,737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.69 : 30,820.91 = 13,166.01 : x
  2. Step 2: Convert to fraction form
    20,559.69/30,820.91 = 13,166.01/x
  3. Step 3: Cross multiply
    20,559.69x = 30,820.91 × 13,166.01
  4. Step 4: Simplify right side
    20,559.69x = 405,788,343.44
  5. Step 5: Solve for x
    x = 405,788,343.44/20,559.69
  6. Step 6: Final answer
    x = 19,737.08

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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.