Home / 10,142.48-15,203.36-6,855.90

Finding the Fourth Proportional to 10,142.48, 15,203.36 and 6,855.90

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Solution

The fourth proportional to 10,142.48, 15,203.36 and 6,855.90 is: 10,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.48 : 15,203.36 = 6,855.90 : x
  2. Step 2: Convert to fraction form
    10,142.48/15,203.36 = 6,855.90/x
  3. Step 3: Cross multiply
    10,142.48x = 15,203.36 × 6,855.90
  4. Step 4: Simplify right side
    10,142.48x = 104,232,681.54
  5. Step 5: Solve for x
    x = 104,232,681.54/10,142.48
  6. Step 6: Final answer
    x = 10,276.85

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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.