Home / 12,857.12-19,296.63-5,071.40

Finding the Fourth Proportional to 12,857.12, 19,296.63 and 5,071.40

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Solution

The fourth proportional to 12,857.12, 19,296.63 and 5,071.40 is: 7,611.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.12 : 19,296.63 = 5,071.40 : x
  2. Step 2: Convert to fraction form
    12,857.12/19,296.63 = 5,071.40/x
  3. Step 3: Cross multiply
    12,857.12x = 19,296.63 × 5,071.40
  4. Step 4: Simplify right side
    12,857.12x = 97,860,832.90
  5. Step 5: Solve for x
    x = 97,860,832.90/12,857.12
  6. Step 6: Final answer
    x = 7,611.41

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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.