Home / 13,840.55-19,099.93-7,790.30

Finding the Fourth Proportional to 13,840.55, 19,099.93 and 7,790.30

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Solution

The fourth proportional to 13,840.55, 19,099.93 and 7,790.30 is: 10,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.55 : 19,099.93 = 7,790.30 : x
  2. Step 2: Convert to fraction form
    13,840.55/19,099.93 = 7,790.30/x
  3. Step 3: Cross multiply
    13,840.55x = 19,099.93 × 7,790.30
  4. Step 4: Simplify right side
    13,840.55x = 148,794,184.68
  5. Step 5: Solve for x
    x = 148,794,184.68/13,840.55
  6. Step 6: Final answer
    x = 10,750.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.