Home / 19,143.04-28,685.24-12,879.85

Finding the Fourth Proportional to 19,143.04, 28,685.24 and 12,879.85

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Solution

The fourth proportional to 19,143.04, 28,685.24 and 12,879.85 is: 19,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.04 : 28,685.24 = 12,879.85 : x
  2. Step 2: Convert to fraction form
    19,143.04/28,685.24 = 12,879.85/x
  3. Step 3: Cross multiply
    19,143.04x = 28,685.24 × 12,879.85
  4. Step 4: Simplify right side
    19,143.04x = 369,461,444.99
  5. Step 5: Solve for x
    x = 369,461,444.99/19,143.04
  6. Step 6: Final answer
    x = 19,300.05

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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.