Home / 20,348.08-28,078.74-11,393.50

Finding the Fourth Proportional to 20,348.08, 28,078.74 and 11,393.50

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Solution

The fourth proportional to 20,348.08, 28,078.74 and 11,393.50 is: 15,722.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.08 : 28,078.74 = 11,393.50 : x
  2. Step 2: Convert to fraction form
    20,348.08/28,078.74 = 11,393.50/x
  3. Step 3: Cross multiply
    20,348.08x = 28,078.74 × 11,393.50
  4. Step 4: Simplify right side
    20,348.08x = 319,915,124.19
  5. Step 5: Solve for x
    x = 319,915,124.19/20,348.08
  6. Step 6: Final answer
    x = 15,722.13

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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.