Home / 10,383.90-15,539.40-7,103.40

Finding the Fourth Proportional to 10,383.90, 15,539.40 and 7,103.40

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Solution

The fourth proportional to 10,383.90, 15,539.40 and 7,103.40 is: 10,630.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.90 : 15,539.40 = 7,103.40 : x
  2. Step 2: Convert to fraction form
    10,383.90/15,539.40 = 7,103.40/x
  3. Step 3: Cross multiply
    10,383.90x = 15,539.40 × 7,103.40
  4. Step 4: Simplify right side
    10,383.90x = 110,382,573.96
  5. Step 5: Solve for x
    x = 110,382,573.96/10,383.90
  6. Step 6: Final answer
    x = 10,630.17

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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.