Home / 13,437.18-20,155.81-4,077.28

Finding the Fourth Proportional to 13,437.18, 20,155.81 and 4,077.28

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Solution

The fourth proportional to 13,437.18, 20,155.81 and 4,077.28 is: 6,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.18 : 20,155.81 = 4,077.28 : x
  2. Step 2: Convert to fraction form
    13,437.18/20,155.81 = 4,077.28/x
  3. Step 3: Cross multiply
    13,437.18x = 20,155.81 × 4,077.28
  4. Step 4: Simplify right side
    13,437.18x = 82,180,780.22
  5. Step 5: Solve for x
    x = 82,180,780.22/13,437.18
  6. Step 6: Final answer
    x = 6,115.93

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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.