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Finding the Fourth Proportional to 10,603.80, 15,873.30 and 10,020.60

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Solution

The fourth proportional to 10,603.80, 15,873.30 and 10,020.60 is: 15,000.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,603.80 : 15,873.30 = 10,020.60 : x
  2. Step 2: Convert to fraction form
    10,603.80/15,873.30 = 10,020.60/x
  3. Step 3: Cross multiply
    10,603.80x = 15,873.30 × 10,020.60
  4. Step 4: Simplify right side
    10,603.80x = 159,059,989.98
  5. Step 5: Solve for x
    x = 159,059,989.98/10,603.80
  6. Step 6: Final answer
    x = 15,000.28

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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.