Home / 28,099.02-42,169.26-13,307.90

Finding the Fourth Proportional to 28,099.02, 42,169.26 and 13,307.90

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Solution

The fourth proportional to 28,099.02, 42,169.26 and 13,307.90 is: 19,971.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.02 : 42,169.26 = 13,307.90 : x
  2. Step 2: Convert to fraction form
    28,099.02/42,169.26 = 13,307.90/x
  3. Step 3: Cross multiply
    28,099.02x = 42,169.26 × 13,307.90
  4. Step 4: Simplify right side
    28,099.02x = 561,184,295.15
  5. Step 5: Solve for x
    x = 561,184,295.15/28,099.02
  6. Step 6: Final answer
    x = 19,971.67

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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.