Home / 28,663.12-39,554.35-15,915.91

Finding the Fourth Proportional to 28,663.12, 39,554.35 and 15,915.91

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Solution

The fourth proportional to 28,663.12, 39,554.35 and 15,915.91 is: 21,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.12 : 39,554.35 = 15,915.91 : x
  2. Step 2: Convert to fraction form
    28,663.12/39,554.35 = 15,915.91/x
  3. Step 3: Cross multiply
    28,663.12x = 39,554.35 × 15,915.91
  4. Step 4: Simplify right side
    28,663.12x = 629,543,474.71
  5. Step 5: Solve for x
    x = 629,543,474.71/28,663.12
  6. Step 6: Final answer
    x = 21,963.54

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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.