Home / 14,015.30-21,006.30-7,438.10

Finding the Fourth Proportional to 14,015.30, 21,006.30 and 7,438.10

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Solution

The fourth proportional to 14,015.30, 21,006.30 and 7,438.10 is: 11,148.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,015.30 : 21,006.30 = 7,438.10 : x
  2. Step 2: Convert to fraction form
    14,015.30/21,006.30 = 7,438.10/x
  3. Step 3: Cross multiply
    14,015.30x = 21,006.30 × 7,438.10
  4. Step 4: Simplify right side
    14,015.30x = 156,246,960.03
  5. Step 5: Solve for x
    x = 156,246,960.03/14,015.30
  6. Step 6: Final answer
    x = 11,148.31

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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.