Home / 18,907.36-28,343.51-8,371.77

Finding the Fourth Proportional to 18,907.36, 28,343.51 and 8,371.77

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Solution

The fourth proportional to 18,907.36, 28,343.51 and 8,371.77 is: 12,549.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.36 : 28,343.51 = 8,371.77 : x
  2. Step 2: Convert to fraction form
    18,907.36/28,343.51 = 8,371.77/x
  3. Step 3: Cross multiply
    18,907.36x = 28,343.51 × 8,371.77
  4. Step 4: Simplify right side
    18,907.36x = 237,285,346.71
  5. Step 5: Solve for x
    x = 237,285,346.71/18,907.36
  6. Step 6: Final answer
    x = 12,549.89

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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.