Home / 20,325.08-28,048.98-12,258.69

Finding the Fourth Proportional to 20,325.08, 28,048.98 and 12,258.69

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Solution

The fourth proportional to 20,325.08, 28,048.98 and 12,258.69 is: 16,917.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.08 : 28,048.98 = 12,258.69 : x
  2. Step 2: Convert to fraction form
    20,325.08/28,048.98 = 12,258.69/x
  3. Step 3: Cross multiply
    20,325.08x = 28,048.98 × 12,258.69
  4. Step 4: Simplify right side
    20,325.08x = 343,843,750.64
  5. Step 5: Solve for x
    x = 343,843,750.64/20,325.08
  6. Step 6: Final answer
    x = 16,917.22

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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.