Home / 28,031.40-42,055.83-8,310.06

Finding the Fourth Proportional to 28,031.40, 42,055.83 and 8,310.06

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Solution

The fourth proportional to 28,031.40, 42,055.83 and 8,310.06 is: 12,467.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.40 : 42,055.83 = 8,310.06 : x
  2. Step 2: Convert to fraction form
    28,031.40/42,055.83 = 8,310.06/x
  3. Step 3: Cross multiply
    28,031.40x = 42,055.83 × 8,310.06
  4. Step 4: Simplify right side
    28,031.40x = 349,486,470.65
  5. Step 5: Solve for x
    x = 349,486,470.65/28,031.40
  6. Step 6: Final answer
    x = 12,467.68

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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.