Home / 28,678.05-42,992.57-10,898.75

Finding the Fourth Proportional to 28,678.05, 42,992.57 and 10,898.75

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Solution

The fourth proportional to 28,678.05, 42,992.57 and 10,898.75 is: 16,338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.05 : 42,992.57 = 10,898.75 : x
  2. Step 2: Convert to fraction form
    28,678.05/42,992.57 = 10,898.75/x
  3. Step 3: Cross multiply
    28,678.05x = 42,992.57 × 10,898.75
  4. Step 4: Simplify right side
    28,678.05x = 468,565,407.02
  5. Step 5: Solve for x
    x = 468,565,407.02/28,678.05
  6. Step 6: Final answer
    x = 16,338.82

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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.