Home / 10,420.29-14,379.42-5,703.66

Finding the Fourth Proportional to 10,420.29, 14,379.42 and 5,703.66

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Solution

The fourth proportional to 10,420.29, 14,379.42 and 5,703.66 is: 7,870.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.29 : 14,379.42 = 5,703.66 : x
  2. Step 2: Convert to fraction form
    10,420.29/14,379.42 = 5,703.66/x
  3. Step 3: Cross multiply
    10,420.29x = 14,379.42 × 5,703.66
  4. Step 4: Simplify right side
    10,420.29x = 82,015,322.68
  5. Step 5: Solve for x
    x = 82,015,322.68/10,420.29
  6. Step 6: Final answer
    x = 7,870.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.