Home / 21,101.63-31,603.97-10,539.23

Finding the Fourth Proportional to 21,101.63, 31,603.97 and 10,539.23

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Solution

The fourth proportional to 21,101.63, 31,603.97 and 10,539.23 is: 15,784.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.63 : 31,603.97 = 10,539.23 : x
  2. Step 2: Convert to fraction form
    21,101.63/31,603.97 = 10,539.23/x
  3. Step 3: Cross multiply
    21,101.63x = 31,603.97 × 10,539.23
  4. Step 4: Simplify right side
    21,101.63x = 333,081,377.07
  5. Step 5: Solve for x
    x = 333,081,377.07/21,101.63
  6. Step 6: Final answer
    x = 15,784.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.