Home / 28,110.87-42,171.39-9,389.07

Finding the Fourth Proportional to 28,110.87, 42,171.39 and 9,389.07

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Solution

The fourth proportional to 28,110.87, 42,171.39 and 9,389.07 is: 14,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.87 : 42,171.39 = 9,389.07 : x
  2. Step 2: Convert to fraction form
    28,110.87/42,171.39 = 9,389.07/x
  3. Step 3: Cross multiply
    28,110.87x = 42,171.39 × 9,389.07
  4. Step 4: Simplify right side
    28,110.87x = 395,950,132.71
  5. Step 5: Solve for x
    x = 395,950,132.71/28,110.87
  6. Step 6: Final answer
    x = 14,085.30

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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.