Home / 14,053.80-21,083.40-7,128.30

Finding the Fourth Proportional to 14,053.80, 21,083.40 and 7,128.30

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Solution

The fourth proportional to 14,053.80, 21,083.40 and 7,128.30 is: 10,693.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,053.80 : 21,083.40 = 7,128.30 : x
  2. Step 2: Convert to fraction form
    14,053.80/21,083.40 = 7,128.30/x
  3. Step 3: Cross multiply
    14,053.80x = 21,083.40 × 7,128.30
  4. Step 4: Simplify right side
    14,053.80x = 150,288,800.22
  5. Step 5: Solve for x
    x = 150,288,800.22/14,053.80
  6. Step 6: Final answer
    x = 10,693.82

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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.