Home / 12,812.80-19,215.60-4,050.40

Finding the Fourth Proportional to 12,812.80, 19,215.60 and 4,050.40

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Solution

The fourth proportional to 12,812.80, 19,215.60 and 4,050.40 is: 6,074.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.80 : 19,215.60 = 4,050.40 : x
  2. Step 2: Convert to fraction form
    12,812.80/19,215.60 = 4,050.40/x
  3. Step 3: Cross multiply
    12,812.80x = 19,215.60 × 4,050.40
  4. Step 4: Simplify right side
    12,812.80x = 77,830,866.24
  5. Step 5: Solve for x
    x = 77,830,866.24/12,812.80
  6. Step 6: Final answer
    x = 6,074.46

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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.