Home / 20,369.54-28,101.84-11,870.39

Finding the Fourth Proportional to 20,369.54, 28,101.84 and 11,870.39

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Solution

The fourth proportional to 20,369.54, 28,101.84 and 11,870.39 is: 16,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.54 : 28,101.84 = 11,870.39 : x
  2. Step 2: Convert to fraction form
    20,369.54/28,101.84 = 11,870.39/x
  3. Step 3: Cross multiply
    20,369.54x = 28,101.84 × 11,870.39
  4. Step 4: Simplify right side
    20,369.54x = 333,579,800.52
  5. Step 5: Solve for x
    x = 333,579,800.52/20,369.54
  6. Step 6: Final answer
    x = 16,376.40

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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.