Home / 28,518.66-39,354.61-15,771.01

Finding the Fourth Proportional to 28,518.66, 39,354.61 and 15,771.01

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Solution

The fourth proportional to 28,518.66, 39,354.61 and 15,771.01 is: 21,763.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.66 : 39,354.61 = 15,771.01 : x
  2. Step 2: Convert to fraction form
    28,518.66/39,354.61 = 15,771.01/x
  3. Step 3: Cross multiply
    28,518.66x = 39,354.61 × 15,771.01
  4. Step 4: Simplify right side
    28,518.66x = 620,661,947.86
  5. Step 5: Solve for x
    x = 620,661,947.86/28,518.66
  6. Step 6: Final answer
    x = 21,763.36

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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.