Home / 15,904.36-21,948.76-9,190.88

Finding the Fourth Proportional to 15,904.36, 21,948.76 and 9,190.88

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Solution

The fourth proportional to 15,904.36, 21,948.76 and 9,190.88 is: 12,683.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,904.36 : 21,948.76 = 9,190.88 : x
  2. Step 2: Convert to fraction form
    15,904.36/21,948.76 = 9,190.88/x
  3. Step 3: Cross multiply
    15,904.36x = 21,948.76 × 9,190.88
  4. Step 4: Simplify right side
    15,904.36x = 201,728,419.31
  5. Step 5: Solve for x
    x = 201,728,419.31/15,904.36
  6. Step 6: Final answer
    x = 12,683.84

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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.