Home / 15,489.54-21,370.62-9,114.06

Finding the Fourth Proportional to 15,489.54, 21,370.62 and 9,114.06

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Solution

The fourth proportional to 15,489.54, 21,370.62 and 9,114.06 is: 12,574.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.54 : 21,370.62 = 9,114.06 : x
  2. Step 2: Convert to fraction form
    15,489.54/21,370.62 = 9,114.06/x
  3. Step 3: Cross multiply
    15,489.54x = 21,370.62 × 9,114.06
  4. Step 4: Simplify right side
    15,489.54x = 194,773,112.92
  5. Step 5: Solve for x
    x = 194,773,112.92/15,489.54
  6. Step 6: Final answer
    x = 12,574.49

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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.