Home / 19,809.81-29,673.41-11,887.20

Finding the Fourth Proportional to 19,809.81, 29,673.41 and 11,887.20

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Solution

The fourth proportional to 19,809.81, 29,673.41 and 11,887.20 is: 17,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.81 : 29,673.41 = 11,887.20 : x
  2. Step 2: Convert to fraction form
    19,809.81/29,673.41 = 11,887.20/x
  3. Step 3: Cross multiply
    19,809.81x = 29,673.41 × 11,887.20
  4. Step 4: Simplify right side
    19,809.81x = 352,733,699.92
  5. Step 5: Solve for x
    x = 352,733,699.92/19,809.81
  6. Step 6: Final answer
    x = 17,806.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.