Home / 13,778.02-19,014.06-7,809.45

Finding the Fourth Proportional to 13,778.02, 19,014.06 and 7,809.45

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Solution

The fourth proportional to 13,778.02, 19,014.06 and 7,809.45 is: 10,777.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.02 : 19,014.06 = 7,809.45 : x
  2. Step 2: Convert to fraction form
    13,778.02/19,014.06 = 7,809.45/x
  3. Step 3: Cross multiply
    13,778.02x = 19,014.06 × 7,809.45
  4. Step 4: Simplify right side
    13,778.02x = 148,489,350.87
  5. Step 5: Solve for x
    x = 148,489,350.87/13,778.02
  6. Step 6: Final answer
    x = 10,777.26

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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.