Home / 13,188.02-19,743.21-8,242.63

Finding the Fourth Proportional to 13,188.02, 19,743.21 and 8,242.63

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Solution

The fourth proportional to 13,188.02, 19,743.21 and 8,242.63 is: 12,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.02 : 19,743.21 = 8,242.63 : x
  2. Step 2: Convert to fraction form
    13,188.02/19,743.21 = 8,242.63/x
  3. Step 3: Cross multiply
    13,188.02x = 19,743.21 × 8,242.63
  4. Step 4: Simplify right side
    13,188.02x = 162,735,925.68
  5. Step 5: Solve for x
    x = 162,735,925.68/13,188.02
  6. Step 6: Final answer
    x = 12,339.68

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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.