Home / 15,999.12-22,078.83-8,925.99

Finding the Fourth Proportional to 15,999.12, 22,078.83 and 8,925.99

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Solution

The fourth proportional to 15,999.12, 22,078.83 and 8,925.99 is: 12,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.12 : 22,078.83 = 8,925.99 : x
  2. Step 2: Convert to fraction form
    15,999.12/22,078.83 = 8,925.99/x
  3. Step 3: Cross multiply
    15,999.12x = 22,078.83 × 8,925.99
  4. Step 4: Simplify right side
    15,999.12x = 197,075,415.79
  5. Step 5: Solve for x
    x = 197,075,415.79/15,999.12
  6. Step 6: Final answer
    x = 12,317.89

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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.