Home / 19,090.52-28,606.55-7,991.16

Finding the Fourth Proportional to 19,090.52, 28,606.55 and 7,991.16

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Solution

The fourth proportional to 19,090.52, 28,606.55 and 7,991.16 is: 11,974.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,090.52 : 28,606.55 = 7,991.16 : x
  2. Step 2: Convert to fraction form
    19,090.52/28,606.55 = 7,991.16/x
  3. Step 3: Cross multiply
    19,090.52x = 28,606.55 × 7,991.16
  4. Step 4: Simplify right side
    19,090.52x = 228,599,518.10
  5. Step 5: Solve for x
    x = 228,599,518.10/19,090.52
  6. Step 6: Final answer
    x = 11,974.50

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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.