Home / 19,730.40-27,220.87-11,662.36

Finding the Fourth Proportional to 19,730.40, 27,220.87 and 11,662.36

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Solution

The fourth proportional to 19,730.40, 27,220.87 and 11,662.36 is: 16,089.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.40 : 27,220.87 = 11,662.36 : x
  2. Step 2: Convert to fraction form
    19,730.40/27,220.87 = 11,662.36/x
  3. Step 3: Cross multiply
    19,730.40x = 27,220.87 × 11,662.36
  4. Step 4: Simplify right side
    19,730.40x = 317,459,585.45
  5. Step 5: Solve for x
    x = 317,459,585.45/19,730.40
  6. Step 6: Final answer
    x = 16,089.87

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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.