Home / 13,765.93-18,997.40-7,798.45

Finding the Fourth Proportional to 13,765.93, 18,997.40 and 7,798.45

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Solution

The fourth proportional to 13,765.93, 18,997.40 and 7,798.45 is: 10,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.93 : 18,997.40 = 7,798.45 : x
  2. Step 2: Convert to fraction form
    13,765.93/18,997.40 = 7,798.45/x
  3. Step 3: Cross multiply
    13,765.93x = 18,997.40 × 7,798.45
  4. Step 4: Simplify right side
    13,765.93x = 148,150,274.03
  5. Step 5: Solve for x
    x = 148,150,274.03/13,765.93
  6. Step 6: Final answer
    x = 10,762.10

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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.