Home / 13,739.23-18,962.58-7,772.77

Finding the Fourth Proportional to 13,739.23, 18,962.58 and 7,772.77

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Solution

The fourth proportional to 13,739.23, 18,962.58 and 7,772.77 is: 10,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.23 : 18,962.58 = 7,772.77 : x
  2. Step 2: Convert to fraction form
    13,739.23/18,962.58 = 7,772.77/x
  3. Step 3: Cross multiply
    13,739.23x = 18,962.58 × 7,772.77
  4. Step 4: Simplify right side
    13,739.23x = 147,391,772.95
  5. Step 5: Solve for x
    x = 147,391,772.95/13,739.23
  6. Step 6: Final answer
    x = 10,727.80

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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.