Home / 19,725.32-27,220.76-10,772.80

Finding the Fourth Proportional to 19,725.32, 27,220.76 and 10,772.80

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Solution

The fourth proportional to 19,725.32, 27,220.76 and 10,772.80 is: 14,866.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,725.32 : 27,220.76 = 10,772.80 : x
  2. Step 2: Convert to fraction form
    19,725.32/27,220.76 = 10,772.80/x
  3. Step 3: Cross multiply
    19,725.32x = 27,220.76 × 10,772.80
  4. Step 4: Simplify right side
    19,725.32x = 293,243,721.81
  5. Step 5: Solve for x
    x = 293,243,721.81/19,725.32
  6. Step 6: Final answer
    x = 14,866.36

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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.