Home / 19,210.10-28,815.08-8,939.23

Finding the Fourth Proportional to 19,210.10, 28,815.08 and 8,939.23

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Solution

The fourth proportional to 19,210.10, 28,815.08 and 8,939.23 is: 13,408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.10 : 28,815.08 = 8,939.23 : x
  2. Step 2: Convert to fraction form
    19,210.10/28,815.08 = 8,939.23/x
  3. Step 3: Cross multiply
    19,210.10x = 28,815.08 × 8,939.23
  4. Step 4: Simplify right side
    19,210.10x = 257,584,510.85
  5. Step 5: Solve for x
    x = 257,584,510.85/19,210.10
  6. Step 6: Final answer
    x = 13,408.81

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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.