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Finding the Fourth Proportional to 10,012.55, 15,009.53 and 4,750.03

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Solution

The fourth proportional to 10,012.55, 15,009.53 and 4,750.03 is: 7,120.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,012.55 : 15,009.53 = 4,750.03 : x
  2. Step 2: Convert to fraction form
    10,012.55/15,009.53 = 4,750.03/x
  3. Step 3: Cross multiply
    10,012.55x = 15,009.53 × 4,750.03
  4. Step 4: Simplify right side
    10,012.55x = 71,295,656.51
  5. Step 5: Solve for x
    x = 71,295,656.51/10,012.55
  6. Step 6: Final answer
    x = 7,120.63

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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.