Home / 28,534.77-39,330.78-21,448.89

Finding the Fourth Proportional to 28,534.77, 39,330.78 and 21,448.89

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Solution

The fourth proportional to 28,534.77, 39,330.78 and 21,448.89 is: 29,563.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,534.77 : 39,330.78 = 21,448.89 : x
  2. Step 2: Convert to fraction form
    28,534.77/39,330.78 = 21,448.89/x
  3. Step 3: Cross multiply
    28,534.77x = 39,330.78 × 21,448.89
  4. Step 4: Simplify right side
    28,534.77x = 843,601,573.83
  5. Step 5: Solve for x
    x = 843,601,573.83/28,534.77
  6. Step 6: Final answer
    x = 29,563.99

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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.