Home / 19,180.19-28,722.06-12,138.93

Finding the Fourth Proportional to 19,180.19, 28,722.06 and 12,138.93

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Solution

The fourth proportional to 19,180.19, 28,722.06 and 12,138.93 is: 18,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,180.19 : 28,722.06 = 12,138.93 : x
  2. Step 2: Convert to fraction form
    19,180.19/28,722.06 = 12,138.93/x
  3. Step 3: Cross multiply
    19,180.19x = 28,722.06 × 12,138.93
  4. Step 4: Simplify right side
    19,180.19x = 348,655,075.80
  5. Step 5: Solve for x
    x = 348,655,075.80/19,180.19
  6. Step 6: Final answer
    x = 18,177.87

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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.