Home / 21,533.27-29,707.47-15,881.58

Finding the Fourth Proportional to 21,533.27, 29,707.47 and 15,881.58

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Solution

The fourth proportional to 21,533.27, 29,707.47 and 15,881.58 is: 21,910.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,533.27 : 29,707.47 = 15,881.58 : x
  2. Step 2: Convert to fraction form
    21,533.27/29,707.47 = 15,881.58/x
  3. Step 3: Cross multiply
    21,533.27x = 29,707.47 × 15,881.58
  4. Step 4: Simplify right side
    21,533.27x = 471,801,561.40
  5. Step 5: Solve for x
    x = 471,801,561.40/21,533.27
  6. Step 6: Final answer
    x = 21,910.36

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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.