Home / 15,821.30-21,826.53-9,530.06

Finding the Fourth Proportional to 15,821.30, 21,826.53 and 9,530.06

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Solution

The fourth proportional to 15,821.30, 21,826.53 and 9,530.06 is: 13,147.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.30 : 21,826.53 = 9,530.06 : x
  2. Step 2: Convert to fraction form
    15,821.30/21,826.53 = 9,530.06/x
  3. Step 3: Cross multiply
    15,821.30x = 21,826.53 × 9,530.06
  4. Step 4: Simplify right side
    15,821.30x = 208,008,140.49
  5. Step 5: Solve for x
    x = 208,008,140.49/15,821.30
  6. Step 6: Final answer
    x = 13,147.35

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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.