Home / 13,913.62-20,875.56-6,520.48

Finding the Fourth Proportional to 13,913.62, 20,875.56 and 6,520.48

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Solution

The fourth proportional to 13,913.62, 20,875.56 and 6,520.48 is: 9,783.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.62 : 20,875.56 = 6,520.48 : x
  2. Step 2: Convert to fraction form
    13,913.62/20,875.56 = 6,520.48/x
  3. Step 3: Cross multiply
    13,913.62x = 20,875.56 × 6,520.48
  4. Step 4: Simplify right side
    13,913.62x = 136,118,671.47
  5. Step 5: Solve for x
    x = 136,118,671.47/13,913.62
  6. Step 6: Final answer
    x = 9,783.12

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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.