Home / 15,271.28-21,071.28-11,028.68

Finding the Fourth Proportional to 15,271.28, 21,071.28 and 11,028.68

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Solution

The fourth proportional to 15,271.28, 21,071.28 and 11,028.68 is: 15,217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.28 : 21,071.28 = 11,028.68 : x
  2. Step 2: Convert to fraction form
    15,271.28/21,071.28 = 11,028.68/x
  3. Step 3: Cross multiply
    15,271.28x = 21,071.28 × 11,028.68
  4. Step 4: Simplify right side
    15,271.28x = 232,388,404.31
  5. Step 5: Solve for x
    x = 232,388,404.31/15,271.28
  6. Step 6: Final answer
    x = 15,217.35

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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.