Home / 19,235.10-28,821.60-10,890.30

Finding the Fourth Proportional to 19,235.10, 28,821.60 and 10,890.30

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Solution

The fourth proportional to 19,235.10, 28,821.60 and 10,890.30 is: 16,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,235.10 : 28,821.60 = 10,890.30 : x
  2. Step 2: Convert to fraction form
    19,235.10/28,821.60 = 10,890.30/x
  3. Step 3: Cross multiply
    19,235.10x = 28,821.60 × 10,890.30
  4. Step 4: Simplify right side
    19,235.10x = 313,875,870.48
  5. Step 5: Solve for x
    x = 313,875,870.48/19,235.10
  6. Step 6: Final answer
    x = 16,317.87

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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.