Home / 19,215.77-28,809.30-12,958.22

Finding the Fourth Proportional to 19,215.77, 28,809.30 and 12,958.22

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Solution

The fourth proportional to 19,215.77, 28,809.30 and 12,958.22 is: 19,427.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.77 : 28,809.30 = 12,958.22 : x
  2. Step 2: Convert to fraction form
    19,215.77/28,809.30 = 12,958.22/x
  3. Step 3: Cross multiply
    19,215.77x = 28,809.30 × 12,958.22
  4. Step 4: Simplify right side
    19,215.77x = 373,317,247.45
  5. Step 5: Solve for x
    x = 373,317,247.45/19,215.77
  6. Step 6: Final answer
    x = 19,427.65

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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.