Home / 19,128.90-28,669.04-10,813.58

Finding the Fourth Proportional to 19,128.90, 28,669.04 and 10,813.58

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Solution

The fourth proportional to 19,128.90, 28,669.04 and 10,813.58 is: 16,206.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.90 : 28,669.04 = 10,813.58 : x
  2. Step 2: Convert to fraction form
    19,128.90/28,669.04 = 10,813.58/x
  3. Step 3: Cross multiply
    19,128.90x = 28,669.04 × 10,813.58
  4. Step 4: Simplify right side
    19,128.90x = 310,014,957.56
  5. Step 5: Solve for x
    x = 310,014,957.56/19,128.90
  6. Step 6: Final answer
    x = 16,206.63

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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.