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Finding the Fourth Proportional to 10,080, 13,912.20 and 9,637.20

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Solution

The fourth proportional to 10,080, 13,912.20 and 9,637.20 is: 13,301.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080 : 13,912.20 = 9,637.20 : x
  2. Step 2: Convert to fraction form
    10,080/13,912.20 = 9,637.20/x
  3. Step 3: Cross multiply
    10,080x = 13,912.20 × 9,637.20
  4. Step 4: Simplify right side
    10,080x = 134,074,653.84
  5. Step 5: Solve for x
    x = 134,074,653.84/10,080
  6. Step 6: Final answer
    x = 13,301.06

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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.