Home / 20,841.85-31,223.55-10,299.60

Finding the Fourth Proportional to 20,841.85, 31,223.55 and 10,299.60

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Solution

The fourth proportional to 20,841.85, 31,223.55 and 10,299.60 is: 15,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.85 : 31,223.55 = 10,299.60 : x
  2. Step 2: Convert to fraction form
    20,841.85/31,223.55 = 10,299.60/x
  3. Step 3: Cross multiply
    20,841.85x = 31,223.55 × 10,299.60
  4. Step 4: Simplify right side
    20,841.85x = 321,590,075.58
  5. Step 5: Solve for x
    x = 321,590,075.58/20,841.85
  6. Step 6: Final answer
    x = 15,430.02

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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.