Home / 12,858.79-19,288.74-6,290.50

Finding the Fourth Proportional to 12,858.79, 19,288.74 and 6,290.50

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Solution

The fourth proportional to 12,858.79, 19,288.74 and 6,290.50 is: 9,436.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.79 : 19,288.74 = 6,290.50 : x
  2. Step 2: Convert to fraction form
    12,858.79/19,288.74 = 6,290.50/x
  3. Step 3: Cross multiply
    12,858.79x = 19,288.74 × 6,290.50
  4. Step 4: Simplify right side
    12,858.79x = 121,335,818.97
  5. Step 5: Solve for x
    x = 121,335,818.97/12,858.79
  6. Step 6: Final answer
    x = 9,436.02

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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.