Home / 28,089.36-42,140.12-8,369.51

Finding the Fourth Proportional to 28,089.36, 42,140.12 and 8,369.51

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Solution

The fourth proportional to 28,089.36, 42,140.12 and 8,369.51 is: 12,556.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.36 : 42,140.12 = 8,369.51 : x
  2. Step 2: Convert to fraction form
    28,089.36/42,140.12 = 8,369.51/x
  3. Step 3: Cross multiply
    28,089.36x = 42,140.12 × 8,369.51
  4. Step 4: Simplify right side
    28,089.36x = 352,691,903.19
  5. Step 5: Solve for x
    x = 352,691,903.19/28,089.36
  6. Step 6: Final answer
    x = 12,556.07

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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.