Home / 13,694.12-18,897.86-7,406.49

Finding the Fourth Proportional to 13,694.12, 18,897.86 and 7,406.49

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Solution

The fourth proportional to 13,694.12, 18,897.86 and 7,406.49 is: 10,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.12 : 18,897.86 = 7,406.49 : x
  2. Step 2: Convert to fraction form
    13,694.12/18,897.86 = 7,406.49/x
  3. Step 3: Cross multiply
    13,694.12x = 18,897.86 × 7,406.49
  4. Step 4: Simplify right side
    13,694.12x = 139,966,774.08
  5. Step 5: Solve for x
    x = 139,966,774.08/13,694.12
  6. Step 6: Final answer
    x = 10,220.94

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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.