Home / 19,706.60-27,201.14-12,155.28

Finding the Fourth Proportional to 19,706.60, 27,201.14 and 12,155.28

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Solution

The fourth proportional to 19,706.60, 27,201.14 and 12,155.28 is: 16,778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,706.60 : 27,201.14 = 12,155.28 : x
  2. Step 2: Convert to fraction form
    19,706.60/27,201.14 = 12,155.28/x
  3. Step 3: Cross multiply
    19,706.60x = 27,201.14 × 12,155.28
  4. Step 4: Simplify right side
    19,706.60x = 330,637,412.24
  5. Step 5: Solve for x
    x = 330,637,412.24/19,706.60
  6. Step 6: Final answer
    x = 16,778.01

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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.