Home / 28,269.90-42,446.70-15,814.80

Finding the Fourth Proportional to 28,269.90, 42,446.70 and 15,814.80

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Solution

The fourth proportional to 28,269.90, 42,446.70 and 15,814.80 is: 23,745.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,269.90 : 42,446.70 = 15,814.80 : x
  2. Step 2: Convert to fraction form
    28,269.90/42,446.70 = 15,814.80/x
  3. Step 3: Cross multiply
    28,269.90x = 42,446.70 × 15,814.80
  4. Step 4: Simplify right side
    28,269.90x = 671,286,071.16
  5. Step 5: Solve for x
    x = 671,286,071.16/28,269.90
  6. Step 6: Final answer
    x = 23,745.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.