Home / 13,698.86-20,550.34-4,931.72

Finding the Fourth Proportional to 13,698.86, 20,550.34 and 4,931.72

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Solution

The fourth proportional to 13,698.86, 20,550.34 and 4,931.72 is: 7,398.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.86 : 20,550.34 = 4,931.72 : x
  2. Step 2: Convert to fraction form
    13,698.86/20,550.34 = 4,931.72/x
  3. Step 3: Cross multiply
    13,698.86x = 20,550.34 × 4,931.72
  4. Step 4: Simplify right side
    13,698.86x = 101,348,503.26
  5. Step 5: Solve for x
    x = 101,348,503.26/13,698.86
  6. Step 6: Final answer
    x = 7,398.32

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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.