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Finding the Fourth Proportional to 10,636.79, 15,955.19 and 4,389.93

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Solution

The fourth proportional to 10,636.79, 15,955.19 and 4,389.93 is: 6,584.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,636.79 : 15,955.19 = 4,389.93 : x
  2. Step 2: Convert to fraction form
    10,636.79/15,955.19 = 4,389.93/x
  3. Step 3: Cross multiply
    10,636.79x = 15,955.19 × 4,389.93
  4. Step 4: Simplify right side
    10,636.79x = 70,042,145.29
  5. Step 5: Solve for x
    x = 70,042,145.29/10,636.79
  6. Step 6: Final answer
    x = 6,584.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.