Home / 19,718.15-27,182.78-12,159.41

Finding the Fourth Proportional to 19,718.15, 27,182.78 and 12,159.41

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Solution

The fourth proportional to 19,718.15, 27,182.78 and 12,159.41 is: 16,762.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.15 : 27,182.78 = 12,159.41 : x
  2. Step 2: Convert to fraction form
    19,718.15/27,182.78 = 12,159.41/x
  3. Step 3: Cross multiply
    19,718.15x = 27,182.78 × 12,159.41
  4. Step 4: Simplify right side
    19,718.15x = 330,526,461.44
  5. Step 5: Solve for x
    x = 330,526,461.44/19,718.15
  6. Step 6: Final answer
    x = 16,762.55

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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.