Home / 15,305.96-21,123.78-9,020.36

Finding the Fourth Proportional to 15,305.96, 21,123.78 and 9,020.36

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Solution

The fourth proportional to 15,305.96, 21,123.78 and 9,020.36 is: 12,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,305.96 : 21,123.78 = 9,020.36 : x
  2. Step 2: Convert to fraction form
    15,305.96/21,123.78 = 9,020.36/x
  3. Step 3: Cross multiply
    15,305.96x = 21,123.78 × 9,020.36
  4. Step 4: Simplify right side
    15,305.96x = 190,544,100.16
  5. Step 5: Solve for x
    x = 190,544,100.16/15,305.96
  6. Step 6: Final answer
    x = 12,449.01

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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.