Home / 9,973.20-13,777.68-7,740.72

Finding the Fourth Proportional to 9,973.20, 13,777.68 and 7,740.72

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Solution

The fourth proportional to 9,973.20, 13,777.68 and 7,740.72 is: 10,693.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,973.20 : 13,777.68 = 7,740.72 : x
  2. Step 2: Convert to fraction form
    9,973.20/13,777.68 = 7,740.72/x
  3. Step 3: Cross multiply
    9,973.20x = 13,777.68 × 7,740.72
  4. Step 4: Simplify right side
    9,973.20x = 106,649,163.13
  5. Step 5: Solve for x
    x = 106,649,163.13/9,973.20
  6. Step 6: Final answer
    x = 10,693.58

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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.