Home / 13,221.83-19,840.55-4,907.69

Finding the Fourth Proportional to 13,221.83, 19,840.55 and 4,907.69

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Solution

The fourth proportional to 13,221.83, 19,840.55 and 4,907.69 is: 7,364.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.83 : 19,840.55 = 4,907.69 : x
  2. Step 2: Convert to fraction form
    13,221.83/19,840.55 = 4,907.69/x
  3. Step 3: Cross multiply
    13,221.83x = 19,840.55 × 4,907.69
  4. Step 4: Simplify right side
    13,221.83x = 97,371,219.49
  5. Step 5: Solve for x
    x = 97,371,219.49/13,221.83
  6. Step 6: Final answer
    x = 7,364.43

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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.