Home / 14,435.19-19,920.87-8,147.70

Finding the Fourth Proportional to 14,435.19, 19,920.87 and 8,147.70

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Solution

The fourth proportional to 14,435.19, 19,920.87 and 8,147.70 is: 11,244.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,435.19 : 19,920.87 = 8,147.70 : x
  2. Step 2: Convert to fraction form
    14,435.19/19,920.87 = 8,147.70/x
  3. Step 3: Cross multiply
    14,435.19x = 19,920.87 × 8,147.70
  4. Step 4: Simplify right side
    14,435.19x = 162,309,272.50
  5. Step 5: Solve for x
    x = 162,309,272.50/14,435.19
  6. Step 6: Final answer
    x = 11,244.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.