Home / 13,239.50-18,270.99-7,933.28

Finding the Fourth Proportional to 13,239.50, 18,270.99 and 7,933.28

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Solution

The fourth proportional to 13,239.50, 18,270.99 and 7,933.28 is: 10,948.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.50 : 18,270.99 = 7,933.28 : x
  2. Step 2: Convert to fraction form
    13,239.50/18,270.99 = 7,933.28/x
  3. Step 3: Cross multiply
    13,239.50x = 18,270.99 × 7,933.28
  4. Step 4: Simplify right side
    13,239.50x = 144,948,925.22
  5. Step 5: Solve for x
    x = 144,948,925.22/13,239.50
  6. Step 6: Final answer
    x = 10,948.22

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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.