Home / 28,002.61-38,658.44-21,615.46

Finding the Fourth Proportional to 28,002.61, 38,658.44 and 21,615.46

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Solution

The fourth proportional to 28,002.61, 38,658.44 and 21,615.46 is: 29,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.61 : 38,658.44 = 21,615.46 : x
  2. Step 2: Convert to fraction form
    28,002.61/38,658.44 = 21,615.46/x
  3. Step 3: Cross multiply
    28,002.61x = 38,658.44 × 21,615.46
  4. Step 4: Simplify right side
    28,002.61x = 835,619,963.48
  5. Step 5: Solve for x
    x = 835,619,963.48/28,002.61
  6. Step 6: Final answer
    x = 29,840.79

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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.