Home / 15,398.66-21,250.22-9,735.89

Finding the Fourth Proportional to 15,398.66, 21,250.22 and 9,735.89

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Solution

The fourth proportional to 15,398.66, 21,250.22 and 9,735.89 is: 13,435.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.66 : 21,250.22 = 9,735.89 : x
  2. Step 2: Convert to fraction form
    15,398.66/21,250.22 = 9,735.89/x
  3. Step 3: Cross multiply
    15,398.66x = 21,250.22 × 9,735.89
  4. Step 4: Simplify right side
    15,398.66x = 206,889,804.40
  5. Step 5: Solve for x
    x = 206,889,804.40/15,398.66
  6. Step 6: Final answer
    x = 13,435.57

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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.