Home / 13,807.08-20,785.32-12,582.36

Finding the Fourth Proportional to 13,807.08, 20,785.32 and 12,582.36

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Solution

The fourth proportional to 13,807.08, 20,785.32 and 12,582.36 is: 18,941.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.08 : 20,785.32 = 12,582.36 : x
  2. Step 2: Convert to fraction form
    13,807.08/20,785.32 = 12,582.36/x
  3. Step 3: Cross multiply
    13,807.08x = 20,785.32 × 12,582.36
  4. Step 4: Simplify right side
    13,807.08x = 261,528,378.96
  5. Step 5: Solve for x
    x = 261,528,378.96/13,807.08
  6. Step 6: Final answer
    x = 18,941.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.