Home / 12,820.80-19,225.50-4,054.20

Finding the Fourth Proportional to 12,820.80, 19,225.50 and 4,054.20

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Solution

The fourth proportional to 12,820.80, 19,225.50 and 4,054.20 is: 6,079.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.80 : 19,225.50 = 4,054.20 : x
  2. Step 2: Convert to fraction form
    12,820.80/19,225.50 = 4,054.20/x
  3. Step 3: Cross multiply
    12,820.80x = 19,225.50 × 4,054.20
  4. Step 4: Simplify right side
    12,820.80x = 77,944,022.10
  5. Step 5: Solve for x
    x = 77,944,022.10/12,820.80
  6. Step 6: Final answer
    x = 6,079.50

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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.