Home / 11,920.14-16,391.43-10,345.50

Finding the Fourth Proportional to 11,920.14, 16,391.43 and 10,345.50

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Solution

The fourth proportional to 11,920.14, 16,391.43 and 10,345.50 is: 14,226.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.14 : 16,391.43 = 10,345.50 : x
  2. Step 2: Convert to fraction form
    11,920.14/16,391.43 = 10,345.50/x
  3. Step 3: Cross multiply
    11,920.14x = 16,391.43 × 10,345.50
  4. Step 4: Simplify right side
    11,920.14x = 169,577,539.07
  5. Step 5: Solve for x
    x = 169,577,539.07/11,920.14
  6. Step 6: Final answer
    x = 14,226.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.