Home / 15,714.81-21,689.37-9,745.11

Finding the Fourth Proportional to 15,714.81, 21,689.37 and 9,745.11

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Solution

The fourth proportional to 15,714.81, 21,689.37 and 9,745.11 is: 13,450.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714.81 : 21,689.37 = 9,745.11 : x
  2. Step 2: Convert to fraction form
    15,714.81/21,689.37 = 9,745.11/x
  3. Step 3: Cross multiply
    15,714.81x = 21,689.37 × 9,745.11
  4. Step 4: Simplify right side
    15,714.81x = 211,365,296.48
  5. Step 5: Solve for x
    x = 211,365,296.48/15,714.81
  6. Step 6: Final answer
    x = 13,450.07

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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.