Home / 13,917.86-20,752.65-12,372.38

Finding the Fourth Proportional to 13,917.86, 20,752.65 and 12,372.38

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Solution

The fourth proportional to 13,917.86, 20,752.65 and 12,372.38 is: 18,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.86 : 20,752.65 = 12,372.38 : x
  2. Step 2: Convert to fraction form
    13,917.86/20,752.65 = 12,372.38/x
  3. Step 3: Cross multiply
    13,917.86x = 20,752.65 × 12,372.38
  4. Step 4: Simplify right side
    13,917.86x = 256,759,671.81
  5. Step 5: Solve for x
    x = 256,759,671.81/13,917.86
  6. Step 6: Final answer
    x = 18,448.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.