Home / 21,071.42-31,607.01-8,591.39

Finding the Fourth Proportional to 21,071.42, 31,607.01 and 8,591.39

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Solution

The fourth proportional to 21,071.42, 31,607.01 and 8,591.39 is: 12,887.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.42 : 31,607.01 = 8,591.39 : x
  2. Step 2: Convert to fraction form
    21,071.42/31,607.01 = 8,591.39/x
  3. Step 3: Cross multiply
    21,071.42x = 31,607.01 × 8,591.39
  4. Step 4: Simplify right side
    21,071.42x = 271,548,199.03
  5. Step 5: Solve for x
    x = 271,548,199.03/21,071.42
  6. Step 6: Final answer
    x = 12,887.04

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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.