Home / 19,271.07-28,902.63-7,420.77

Finding the Fourth Proportional to 19,271.07, 28,902.63 and 7,420.77

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Solution

The fourth proportional to 19,271.07, 28,902.63 and 7,420.77 is: 11,129.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.07 : 28,902.63 = 7,420.77 : x
  2. Step 2: Convert to fraction form
    19,271.07/28,902.63 = 7,420.77/x
  3. Step 3: Cross multiply
    19,271.07x = 28,902.63 × 7,420.77
  4. Step 4: Simplify right side
    19,271.07x = 214,479,872.70
  5. Step 5: Solve for x
    x = 214,479,872.70/19,271.07
  6. Step 6: Final answer
    x = 11,129.63

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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.