Home / 17,928.18-26,890.65-4,780.13

Finding the Fourth Proportional to 17,928.18, 26,890.65 and 4,780.13

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Solution

The fourth proportional to 17,928.18, 26,890.65 and 4,780.13 is: 7,169.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,928.18 : 26,890.65 = 4,780.13 : x
  2. Step 2: Convert to fraction form
    17,928.18/26,890.65 = 4,780.13/x
  3. Step 3: Cross multiply
    17,928.18x = 26,890.65 × 4,780.13
  4. Step 4: Simplify right side
    17,928.18x = 128,540,668.33
  5. Step 5: Solve for x
    x = 128,540,668.33/17,928.18
  6. Step 6: Final answer
    x = 7,169.76

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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.