Home / 12,938.02-19,393.21-7,379.39

Finding the Fourth Proportional to 12,938.02, 19,393.21 and 7,379.39

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Solution

The fourth proportional to 12,938.02, 19,393.21 and 7,379.39 is: 11,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.02 : 19,393.21 = 7,379.39 : x
  2. Step 2: Convert to fraction form
    12,938.02/19,393.21 = 7,379.39/x
  3. Step 3: Cross multiply
    12,938.02x = 19,393.21 × 7,379.39
  4. Step 4: Simplify right side
    12,938.02x = 143,110,059.94
  5. Step 5: Solve for x
    x = 143,110,059.94/12,938.02
  6. Step 6: Final answer
    x = 11,061.20

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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.