Home / 13,072.42-18,038.99-7,407.28

Finding the Fourth Proportional to 13,072.42, 18,038.99 and 7,407.28

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Solution

The fourth proportional to 13,072.42, 18,038.99 and 7,407.28 is: 10,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.42 : 18,038.99 = 7,407.28 : x
  2. Step 2: Convert to fraction form
    13,072.42/18,038.99 = 7,407.28/x
  3. Step 3: Cross multiply
    13,072.42x = 18,038.99 × 7,407.28
  4. Step 4: Simplify right side
    13,072.42x = 133,619,722.62
  5. Step 5: Solve for x
    x = 133,619,722.62/13,072.42
  6. Step 6: Final answer
    x = 10,221.50

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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.