Home / 20,531.64-28,333.30-11,579.16

Finding the Fourth Proportional to 20,531.64, 28,333.30 and 11,579.16

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Solution

The fourth proportional to 20,531.64, 28,333.30 and 11,579.16 is: 15,979.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.64 : 28,333.30 = 11,579.16 : x
  2. Step 2: Convert to fraction form
    20,531.64/28,333.30 = 11,579.16/x
  3. Step 3: Cross multiply
    20,531.64x = 28,333.30 × 11,579.16
  4. Step 4: Simplify right side
    20,531.64x = 328,075,814.03
  5. Step 5: Solve for x
    x = 328,075,814.03/20,531.64
  6. Step 6: Final answer
    x = 15,979.04

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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.