Home / 28,429.14-42,613.92-15,930.84

Finding the Fourth Proportional to 28,429.14, 42,613.92 and 15,930.84

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Solution

The fourth proportional to 28,429.14, 42,613.92 and 15,930.84 is: 23,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.14 : 42,613.92 = 15,930.84 : x
  2. Step 2: Convert to fraction form
    28,429.14/42,613.92 = 15,930.84/x
  3. Step 3: Cross multiply
    28,429.14x = 42,613.92 × 15,930.84
  4. Step 4: Simplify right side
    28,429.14x = 678,875,541.29
  5. Step 5: Solve for x
    x = 678,875,541.29/28,429.14
  6. Step 6: Final answer
    x = 23,879.57

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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.