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Finding the Fourth Proportional to 10,039.40, 15,059.10 and 4,855.40

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Solution

The fourth proportional to 10,039.40, 15,059.10 and 4,855.40 is: 7,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,039.40 : 15,059.10 = 4,855.40 : x
  2. Step 2: Convert to fraction form
    10,039.40/15,059.10 = 4,855.40/x
  3. Step 3: Cross multiply
    10,039.40x = 15,059.10 × 4,855.40
  4. Step 4: Simplify right side
    10,039.40x = 73,117,954.14
  5. Step 5: Solve for x
    x = 73,117,954.14/10,039.40
  6. Step 6: Final answer
    x = 7,283.10

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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.