Home / 28,357.48-39,144-21,304.27

Finding the Fourth Proportional to 28,357.48, 39,144 and 21,304.27

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Solution

The fourth proportional to 28,357.48, 39,144 and 21,304.27 is: 29,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.48 : 39,144 = 21,304.27 : x
  2. Step 2: Convert to fraction form
    28,357.48/39,144 = 21,304.27/x
  3. Step 3: Cross multiply
    28,357.48x = 39,144 × 21,304.27
  4. Step 4: Simplify right side
    28,357.48x = 833,934,344.88
  5. Step 5: Solve for x
    x = 833,934,344.88/28,357.48
  6. Step 6: Final answer
    x = 29,407.91

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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.