Home / 28,523.77-39,315.64-21,437.89

Finding the Fourth Proportional to 28,523.77, 39,315.64 and 21,437.89

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Solution

The fourth proportional to 28,523.77, 39,315.64 and 21,437.89 is: 29,548.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,523.77 : 39,315.64 = 21,437.89 : x
  2. Step 2: Convert to fraction form
    28,523.77/39,315.64 = 21,437.89/x
  3. Step 3: Cross multiply
    28,523.77x = 39,315.64 × 21,437.89
  4. Step 4: Simplify right side
    28,523.77x = 842,844,365.60
  5. Step 5: Solve for x
    x = 842,844,365.60/28,523.77
  6. Step 6: Final answer
    x = 29,548.84

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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.