Home / 19,100.30-28,658.55-12,085.70

Finding the Fourth Proportional to 19,100.30, 28,658.55 and 12,085.70

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Solution

The fourth proportional to 19,100.30, 28,658.55 and 12,085.70 is: 18,133.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,100.30 : 28,658.55 = 12,085.70 : x
  2. Step 2: Convert to fraction form
    19,100.30/28,658.55 = 12,085.70/x
  3. Step 3: Cross multiply
    19,100.30x = 28,658.55 × 12,085.70
  4. Step 4: Simplify right side
    19,100.30x = 346,358,637.74
  5. Step 5: Solve for x
    x = 346,358,637.74/19,100.30
  6. Step 6: Final answer
    x = 18,133.68

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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.