Home / 21,518.59-29,698.44-12,087.16

Finding the Fourth Proportional to 21,518.59, 29,698.44 and 12,087.16

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Solution

The fourth proportional to 21,518.59, 29,698.44 and 12,087.16 is: 16,681.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.59 : 29,698.44 = 12,087.16 : x
  2. Step 2: Convert to fraction form
    21,518.59/29,698.44 = 12,087.16/x
  3. Step 3: Cross multiply
    21,518.59x = 29,698.44 × 12,087.16
  4. Step 4: Simplify right side
    21,518.59x = 358,969,796.03
  5. Step 5: Solve for x
    x = 358,969,796.03/21,518.59
  6. Step 6: Final answer
    x = 16,681.85

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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.