Home / 15,435.72-21,309.24-9,776.39

Finding the Fourth Proportional to 15,435.72, 21,309.24 and 9,776.39

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Solution

The fourth proportional to 15,435.72, 21,309.24 and 9,776.39 is: 13,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.72 : 21,309.24 = 9,776.39 : x
  2. Step 2: Convert to fraction form
    15,435.72/21,309.24 = 9,776.39/x
  3. Step 3: Cross multiply
    15,435.72x = 21,309.24 × 9,776.39
  4. Step 4: Simplify right side
    15,435.72x = 208,327,370.96
  5. Step 5: Solve for x
    x = 208,327,370.96/15,435.72
  6. Step 6: Final answer
    x = 13,496.45

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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.