Home / 10,722.31-16,139.36-9,703.51

Finding the Fourth Proportional to 10,722.31, 16,139.36 and 9,703.51

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Solution

The fourth proportional to 10,722.31, 16,139.36 and 9,703.51 is: 14,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,722.31 : 16,139.36 = 9,703.51 : x
  2. Step 2: Convert to fraction form
    10,722.31/16,139.36 = 9,703.51/x
  3. Step 3: Cross multiply
    10,722.31x = 16,139.36 × 9,703.51
  4. Step 4: Simplify right side
    10,722.31x = 156,608,441.15
  5. Step 5: Solve for x
    x = 156,608,441.15/10,722.31
  6. Step 6: Final answer
    x = 14,605.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.