Home / 28,234.69-38,946.76-18,674.53

Finding the Fourth Proportional to 28,234.69, 38,946.76 and 18,674.53

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Solution

The fourth proportional to 28,234.69, 38,946.76 and 18,674.53 is: 25,759.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,234.69 : 38,946.76 = 18,674.53 : x
  2. Step 2: Convert to fraction form
    28,234.69/38,946.76 = 18,674.53/x
  3. Step 3: Cross multiply
    28,234.69x = 38,946.76 × 18,674.53
  4. Step 4: Simplify right side
    28,234.69x = 727,312,438.02
  5. Step 5: Solve for x
    x = 727,312,438.02/28,234.69
  6. Step 6: Final answer
    x = 25,759.53

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Double scale
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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.