Home / 13,953.99-21,013.52-10,085.43

Finding the Fourth Proportional to 13,953.99, 21,013.52 and 10,085.43

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Solution

The fourth proportional to 13,953.99, 21,013.52 and 10,085.43 is: 15,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.99 : 21,013.52 = 10,085.43 : x
  2. Step 2: Convert to fraction form
    13,953.99/21,013.52 = 10,085.43/x
  3. Step 3: Cross multiply
    13,953.99x = 21,013.52 × 10,085.43
  4. Step 4: Simplify right side
    13,953.99x = 211,930,410.23
  5. Step 5: Solve for x
    x = 211,930,410.23/13,953.99
  6. Step 6: Final answer
    x = 15,187.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.