Home / 21,016.28-29,014.08-15,345.32

Finding the Fourth Proportional to 21,016.28, 29,014.08 and 15,345.32

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Solution

The fourth proportional to 21,016.28, 29,014.08 and 15,345.32 is: 21,185.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016.28 : 29,014.08 = 15,345.32 : x
  2. Step 2: Convert to fraction form
    21,016.28/29,014.08 = 15,345.32/x
  3. Step 3: Cross multiply
    21,016.28x = 29,014.08 × 15,345.32
  4. Step 4: Simplify right side
    21,016.28x = 445,230,342.11
  5. Step 5: Solve for x
    x = 445,230,342.11/21,016.28
  6. Step 6: Final answer
    x = 21,185.02

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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.