Home / 12,953.58-19,430.22-4,188.30

Finding the Fourth Proportional to 12,953.58, 19,430.22 and 4,188.30

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Solution

The fourth proportional to 12,953.58, 19,430.22 and 4,188.30 is: 6,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,953.58 : 19,430.22 = 4,188.30 : x
  2. Step 2: Convert to fraction form
    12,953.58/19,430.22 = 4,188.30/x
  3. Step 3: Cross multiply
    12,953.58x = 19,430.22 × 4,188.30
  4. Step 4: Simplify right side
    12,953.58x = 81,379,590.43
  5. Step 5: Solve for x
    x = 81,379,590.43/12,953.58
  6. Step 6: Final answer
    x = 6,282.40

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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.