Home / 9,904.56-13,668.30-5,428.20

Finding the Fourth Proportional to 9,904.56, 13,668.30 and 5,428.20

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Solution

The fourth proportional to 9,904.56, 13,668.30 and 5,428.20 is: 7,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904.56 : 13,668.30 = 5,428.20 : x
  2. Step 2: Convert to fraction form
    9,904.56/13,668.30 = 5,428.20/x
  3. Step 3: Cross multiply
    9,904.56x = 13,668.30 × 5,428.20
  4. Step 4: Simplify right side
    9,904.56x = 74,194,266.06
  5. Step 5: Solve for x
    x = 74,194,266.06/9,904.56
  6. Step 6: Final answer
    x = 7,490.92

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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.