Home / 15,310.24-21,130.44-9,345.36

Finding the Fourth Proportional to 15,310.24, 21,130.44 and 9,345.36

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Solution

The fourth proportional to 15,310.24, 21,130.44 and 9,345.36 is: 12,898.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.24 : 21,130.44 = 9,345.36 : x
  2. Step 2: Convert to fraction form
    15,310.24/21,130.44 = 9,345.36/x
  3. Step 3: Cross multiply
    15,310.24x = 21,130.44 × 9,345.36
  4. Step 4: Simplify right side
    15,310.24x = 197,471,612.95
  5. Step 5: Solve for x
    x = 197,471,612.95/15,310.24
  6. Step 6: Final answer
    x = 12,898.01

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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.