Home / 21,159.70-29,334.07-20,036.16

Finding the Fourth Proportional to 21,159.70, 29,334.07 and 20,036.16

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Solution

The fourth proportional to 21,159.70, 29,334.07 and 20,036.16 is: 27,776.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.70 : 29,334.07 = 20,036.16 : x
  2. Step 2: Convert to fraction form
    21,159.70/29,334.07 = 20,036.16/x
  3. Step 3: Cross multiply
    21,159.70x = 29,334.07 × 20,036.16
  4. Step 4: Simplify right side
    21,159.70x = 587,742,032.31
  5. Step 5: Solve for x
    x = 587,742,032.31/21,159.70
  6. Step 6: Final answer
    x = 27,776.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.