Home / 15,301.67-21,096.92-9,988.07

Finding the Fourth Proportional to 15,301.67, 21,096.92 and 9,988.07

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Solution

The fourth proportional to 15,301.67, 21,096.92 and 9,988.07 is: 13,770.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.67 : 21,096.92 = 9,988.07 : x
  2. Step 2: Convert to fraction form
    15,301.67/21,096.92 = 9,988.07/x
  3. Step 3: Cross multiply
    15,301.67x = 21,096.92 × 9,988.07
  4. Step 4: Simplify right side
    15,301.67x = 210,717,433.23
  5. Step 5: Solve for x
    x = 210,717,433.23/15,301.67
  6. Step 6: Final answer
    x = 13,770.88

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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.