Home / 21,558.96-29,752.92-15,588.72

Finding the Fourth Proportional to 21,558.96, 29,752.92 and 15,588.72

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Solution

The fourth proportional to 21,558.96, 29,752.92 and 15,588.72 is: 21,513.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.96 : 29,752.92 = 15,588.72 : x
  2. Step 2: Convert to fraction form
    21,558.96/29,752.92 = 15,588.72/x
  3. Step 3: Cross multiply
    21,558.96x = 29,752.92 × 15,588.72
  4. Step 4: Simplify right side
    21,558.96x = 463,809,939.06
  5. Step 5: Solve for x
    x = 463,809,939.06/21,558.96
  6. Step 6: Final answer
    x = 21,513.56

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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.