Home / 15,228.85-21,017.74-8,514.87

Finding the Fourth Proportional to 15,228.85, 21,017.74 and 8,514.87

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Solution

The fourth proportional to 15,228.85, 21,017.74 and 8,514.87 is: 11,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.85 : 21,017.74 = 8,514.87 : x
  2. Step 2: Convert to fraction form
    15,228.85/21,017.74 = 8,514.87/x
  3. Step 3: Cross multiply
    15,228.85x = 21,017.74 × 8,514.87
  4. Step 4: Simplify right side
    15,228.85x = 178,963,323.79
  5. Step 5: Solve for x
    x = 178,963,323.79/15,228.85
  6. Step 6: Final answer
    x = 11,751.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.