Home / 19,118.58-28,675.65-5,079.71

Finding the Fourth Proportional to 19,118.58, 28,675.65 and 5,079.71

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Solution

The fourth proportional to 19,118.58, 28,675.65 and 5,079.71 is: 7,618.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,118.58 : 28,675.65 = 5,079.71 : x
  2. Step 2: Convert to fraction form
    19,118.58/28,675.65 = 5,079.71/x
  3. Step 3: Cross multiply
    19,118.58x = 28,675.65 × 5,079.71
  4. Step 4: Simplify right side
    19,118.58x = 145,663,986.06
  5. Step 5: Solve for x
    x = 145,663,986.06/19,118.58
  6. Step 6: Final answer
    x = 7,618.98

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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.