Home / 13,436.81-20,155.21-4,671.72

Finding the Fourth Proportional to 13,436.81, 20,155.21 and 4,671.72

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Solution

The fourth proportional to 13,436.81, 20,155.21 and 4,671.72 is: 7,007.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.81 : 20,155.21 = 4,671.72 : x
  2. Step 2: Convert to fraction form
    13,436.81/20,155.21 = 4,671.72/x
  3. Step 3: Cross multiply
    13,436.81x = 20,155.21 × 4,671.72
  4. Step 4: Simplify right side
    13,436.81x = 94,159,497.66
  5. Step 5: Solve for x
    x = 94,159,497.66/13,436.81
  6. Step 6: Final answer
    x = 7,007.58

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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.