Home / 13,807.18-19,053.39-8,438.60

Finding the Fourth Proportional to 13,807.18, 19,053.39 and 8,438.60

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Solution

The fourth proportional to 13,807.18, 19,053.39 and 8,438.60 is: 11,644.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.18 : 19,053.39 = 8,438.60 : x
  2. Step 2: Convert to fraction form
    13,807.18/19,053.39 = 8,438.60/x
  3. Step 3: Cross multiply
    13,807.18x = 19,053.39 × 8,438.60
  4. Step 4: Simplify right side
    13,807.18x = 160,784,016.13
  5. Step 5: Solve for x
    x = 160,784,016.13/13,807.18
  6. Step 6: Final answer
    x = 11,644.96

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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.