Home / 28,136.46-38,827.83-15,561.21

Finding the Fourth Proportional to 28,136.46, 38,827.83 and 15,561.21

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Solution

The fourth proportional to 28,136.46, 38,827.83 and 15,561.21 is: 21,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.46 : 38,827.83 = 15,561.21 : x
  2. Step 2: Convert to fraction form
    28,136.46/38,827.83 = 15,561.21/x
  3. Step 3: Cross multiply
    28,136.46x = 38,827.83 × 15,561.21
  4. Step 4: Simplify right side
    28,136.46x = 604,208,016.47
  5. Step 5: Solve for x
    x = 604,208,016.47/28,136.46
  6. Step 6: Final answer
    x = 21,474.20

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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.