Home / 12,859.79-19,290.24-6,291.50

Finding the Fourth Proportional to 12,859.79, 19,290.24 and 6,291.50

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Solution

The fourth proportional to 12,859.79, 19,290.24 and 6,291.50 is: 9,437.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.79 : 19,290.24 = 6,291.50 : x
  2. Step 2: Convert to fraction form
    12,859.79/19,290.24 = 6,291.50/x
  3. Step 3: Cross multiply
    12,859.79x = 19,290.24 × 6,291.50
  4. Step 4: Simplify right side
    12,859.79x = 121,364,544.96
  5. Step 5: Solve for x
    x = 121,364,544.96/12,859.79
  6. Step 6: Final answer
    x = 9,437.52

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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.