Home / 15,571.56-21,488.76-11,103.10

Finding the Fourth Proportional to 15,571.56, 21,488.76 and 11,103.10

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Solution

The fourth proportional to 15,571.56, 21,488.76 and 11,103.10 is: 15,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.56 : 21,488.76 = 11,103.10 : x
  2. Step 2: Convert to fraction form
    15,571.56/21,488.76 = 11,103.10/x
  3. Step 3: Cross multiply
    15,571.56x = 21,488.76 × 11,103.10
  4. Step 4: Simplify right side
    15,571.56x = 238,591,851.16
  5. Step 5: Solve for x
    x = 238,591,851.16/15,571.56
  6. Step 6: Final answer
    x = 15,322.28

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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.