Home / 19,016.21-28,521.88-4,977.20

Finding the Fourth Proportional to 19,016.21, 28,521.88 and 4,977.20

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Solution

The fourth proportional to 19,016.21, 28,521.88 and 4,977.20 is: 7,465.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,016.21 : 28,521.88 = 4,977.20 : x
  2. Step 2: Convert to fraction form
    19,016.21/28,521.88 = 4,977.20/x
  3. Step 3: Cross multiply
    19,016.21x = 28,521.88 × 4,977.20
  4. Step 4: Simplify right side
    19,016.21x = 141,959,160.00
  5. Step 5: Solve for x
    x = 141,959,160.00/19,016.21
  6. Step 6: Final answer
    x = 7,465.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.