Home / 15,720.06-21,693.69-9,432.44

Finding the Fourth Proportional to 15,720.06, 21,693.69 and 9,432.44

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Solution

The fourth proportional to 15,720.06, 21,693.69 and 9,432.44 is: 13,016.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.06 : 21,693.69 = 9,432.44 : x
  2. Step 2: Convert to fraction form
    15,720.06/21,693.69 = 9,432.44/x
  3. Step 3: Cross multiply
    15,720.06x = 21,693.69 × 9,432.44
  4. Step 4: Simplify right side
    15,720.06x = 204,624,429.30
  5. Step 5: Solve for x
    x = 204,624,429.30/15,720.06
  6. Step 6: Final answer
    x = 13,016.77

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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.