Home / 28,472.48-39,291.78-15,725.66

Finding the Fourth Proportional to 28,472.48, 39,291.78 and 15,725.66

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Solution

The fourth proportional to 28,472.48, 39,291.78 and 15,725.66 is: 21,701.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.48 : 39,291.78 = 15,725.66 : x
  2. Step 2: Convert to fraction form
    28,472.48/39,291.78 = 15,725.66/x
  3. Step 3: Cross multiply
    28,472.48x = 39,291.78 × 15,725.66
  4. Step 4: Simplify right side
    28,472.48x = 617,889,173.07
  5. Step 5: Solve for x
    x = 617,889,173.07/28,472.48
  6. Step 6: Final answer
    x = 21,701.28

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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.