Home / 19,040.64-28,560.96-5,191.68

Finding the Fourth Proportional to 19,040.64, 28,560.96 and 5,191.68

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Solution

The fourth proportional to 19,040.64, 28,560.96 and 5,191.68 is: 7,787.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,040.64 : 28,560.96 = 5,191.68 : x
  2. Step 2: Convert to fraction form
    19,040.64/28,560.96 = 5,191.68/x
  3. Step 3: Cross multiply
    19,040.64x = 28,560.96 × 5,191.68
  4. Step 4: Simplify right side
    19,040.64x = 148,279,364.81
  5. Step 5: Solve for x
    x = 148,279,364.81/19,040.64
  6. Step 6: Final answer
    x = 7,787.52

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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.