Home / 13,637.12-20,474.83-6,978.38

Finding the Fourth Proportional to 13,637.12, 20,474.83 and 6,978.38

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Solution

The fourth proportional to 13,637.12, 20,474.83 and 6,978.38 is: 10,477.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.12 : 20,474.83 = 6,978.38 : x
  2. Step 2: Convert to fraction form
    13,637.12/20,474.83 = 6,978.38/x
  3. Step 3: Cross multiply
    13,637.12x = 20,474.83 × 6,978.38
  4. Step 4: Simplify right side
    13,637.12x = 142,881,006.91
  5. Step 5: Solve for x
    x = 142,881,006.91/13,637.12
  6. Step 6: Final answer
    x = 10,477.36

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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.