Home / 21,004.26-28,987.02-12,051.69

Finding the Fourth Proportional to 21,004.26, 28,987.02 and 12,051.69

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Solution

The fourth proportional to 21,004.26, 28,987.02 and 12,051.69 is: 16,631.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.26 : 28,987.02 = 12,051.69 : x
  2. Step 2: Convert to fraction form
    21,004.26/28,987.02 = 12,051.69/x
  3. Step 3: Cross multiply
    21,004.26x = 28,987.02 × 12,051.69
  4. Step 4: Simplify right side
    21,004.26x = 349,342,579.06
  5. Step 5: Solve for x
    x = 349,342,579.06/21,004.26
  6. Step 6: Final answer
    x = 16,631.99

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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.