Home / 28,370.05-39,151.73-15,623.77

Finding the Fourth Proportional to 28,370.05, 39,151.73 and 15,623.77

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Solution

The fourth proportional to 28,370.05, 39,151.73 and 15,623.77 is: 21,561.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.05 : 39,151.73 = 15,623.77 : x
  2. Step 2: Convert to fraction form
    28,370.05/39,151.73 = 15,623.77/x
  3. Step 3: Cross multiply
    28,370.05x = 39,151.73 × 15,623.77
  4. Step 4: Simplify right side
    28,370.05x = 611,697,624.62
  5. Step 5: Solve for x
    x = 611,697,624.62/28,370.05
  6. Step 6: Final answer
    x = 21,561.39

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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.