Home / 19,118.35-28,678.02-9,255.79

Finding the Fourth Proportional to 19,118.35, 28,678.02 and 9,255.79

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Solution

The fourth proportional to 19,118.35, 28,678.02 and 9,255.79 is: 13,883.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,118.35 : 28,678.02 = 9,255.79 : x
  2. Step 2: Convert to fraction form
    19,118.35/28,678.02 = 9,255.79/x
  3. Step 3: Cross multiply
    19,118.35x = 28,678.02 × 9,255.79
  4. Step 4: Simplify right side
    19,118.35x = 265,437,730.74
  5. Step 5: Solve for x
    x = 265,437,730.74/19,118.35
  6. Step 6: Final answer
    x = 13,883.92

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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.