Home / 13,212.54-19,681.14-12,511.34

Finding the Fourth Proportional to 13,212.54, 19,681.14 and 12,511.34

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Solution

The fourth proportional to 13,212.54, 19,681.14 and 12,511.34 is: 18,636.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.54 : 19,681.14 = 12,511.34 : x
  2. Step 2: Convert to fraction form
    13,212.54/19,681.14 = 12,511.34/x
  3. Step 3: Cross multiply
    13,212.54x = 19,681.14 × 12,511.34
  4. Step 4: Simplify right side
    13,212.54x = 246,237,434.13
  5. Step 5: Solve for x
    x = 246,237,434.13/13,212.54
  6. Step 6: Final answer
    x = 18,636.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.