Home / 13,865.90-20,807.09-5,106.96

Finding the Fourth Proportional to 13,865.90, 20,807.09 and 5,106.96

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Solution

The fourth proportional to 13,865.90, 20,807.09 and 5,106.96 is: 7,663.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.90 : 20,807.09 = 5,106.96 : x
  2. Step 2: Convert to fraction form
    13,865.90/20,807.09 = 5,106.96/x
  3. Step 3: Cross multiply
    13,865.90x = 20,807.09 × 5,106.96
  4. Step 4: Simplify right side
    13,865.90x = 106,260,950.81
  5. Step 5: Solve for x
    x = 106,260,950.81/13,865.90
  6. Step 6: Final answer
    x = 7,663.48

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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.