Home / 19,345.11-28,968.36-12,751.30

Finding the Fourth Proportional to 19,345.11, 28,968.36 and 12,751.30

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Solution

The fourth proportional to 19,345.11, 28,968.36 and 12,751.30 is: 19,094.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,345.11 : 28,968.36 = 12,751.30 : x
  2. Step 2: Convert to fraction form
    19,345.11/28,968.36 = 12,751.30/x
  3. Step 3: Cross multiply
    19,345.11x = 28,968.36 × 12,751.30
  4. Step 4: Simplify right side
    19,345.11x = 369,384,248.87
  5. Step 5: Solve for x
    x = 369,384,248.87/19,345.11
  6. Step 6: Final answer
    x = 19,094.45

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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.