Home / 11,199.47-15,453.13-6,721.58

Finding the Fourth Proportional to 11,199.47, 15,453.13 and 6,721.58

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Solution

The fourth proportional to 11,199.47, 15,453.13 and 6,721.58 is: 9,274.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,199.47 : 15,453.13 = 6,721.58 : x
  2. Step 2: Convert to fraction form
    11,199.47/15,453.13 = 6,721.58/x
  3. Step 3: Cross multiply
    11,199.47x = 15,453.13 × 6,721.58
  4. Step 4: Simplify right side
    11,199.47x = 103,869,483.98
  5. Step 5: Solve for x
    x = 103,869,483.98/11,199.47
  6. Step 6: Final answer
    x = 9,274.50

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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.