Home / 21,077.52-29,091.05-13,533.43

Finding the Fourth Proportional to 21,077.52, 29,091.05 and 13,533.43

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Solution

The fourth proportional to 21,077.52, 29,091.05 and 13,533.43 is: 18,678.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.52 : 29,091.05 = 13,533.43 : x
  2. Step 2: Convert to fraction form
    21,077.52/29,091.05 = 13,533.43/x
  3. Step 3: Cross multiply
    21,077.52x = 29,091.05 × 13,533.43
  4. Step 4: Simplify right side
    21,077.52x = 393,701,653.70
  5. Step 5: Solve for x
    x = 393,701,653.70/21,077.52
  6. Step 6: Final answer
    x = 18,678.75

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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.