Home / 12,721.66-17,558.00-8,739.50

Finding the Fourth Proportional to 12,721.66, 17,558.00 and 8,739.50

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Solution

The fourth proportional to 12,721.66, 17,558.00 and 8,739.50 is: 12,061.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.66 : 17,558.00 = 8,739.50 : x
  2. Step 2: Convert to fraction form
    12,721.66/17,558.00 = 8,739.50/x
  3. Step 3: Cross multiply
    12,721.66x = 17,558.00 × 8,739.50
  4. Step 4: Simplify right side
    12,721.66x = 153,448,042.29
  5. Step 5: Solve for x
    x = 153,448,042.29/12,721.66
  6. Step 6: Final answer
    x = 12,061.95

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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.