Home / 21,588.65-29,792.31-12,157.28

Finding the Fourth Proportional to 21,588.65, 29,792.31 and 12,157.28

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Solution

The fourth proportional to 21,588.65, 29,792.31 and 12,157.28 is: 16,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.65 : 29,792.31 = 12,157.28 : x
  2. Step 2: Convert to fraction form
    21,588.65/29,792.31 = 12,157.28/x
  3. Step 3: Cross multiply
    21,588.65x = 29,792.31 × 12,157.28
  4. Step 4: Simplify right side
    21,588.65x = 362,193,454.52
  5. Step 5: Solve for x
    x = 362,193,454.52/21,588.65
  6. Step 6: Final answer
    x = 16,777.03

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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.