Home / 12,700.49-19,051.65-4,380.39

Finding the Fourth Proportional to 12,700.49, 19,051.65 and 4,380.39

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Solution

The fourth proportional to 12,700.49, 19,051.65 and 4,380.39 is: 6,570.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.49 : 19,051.65 = 4,380.39 : x
  2. Step 2: Convert to fraction form
    12,700.49/19,051.65 = 4,380.39/x
  3. Step 3: Cross multiply
    12,700.49x = 19,051.65 × 4,380.39
  4. Step 4: Simplify right side
    12,700.49x = 83,453,657.14
  5. Step 5: Solve for x
    x = 83,453,657.14/12,700.49
  6. Step 6: Final answer
    x = 6,570.90

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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.