Home / 10,419.22-14,378.70-5,703.76

Finding the Fourth Proportional to 10,419.22, 14,378.70 and 5,703.76

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Solution

The fourth proportional to 10,419.22, 14,378.70 and 5,703.76 is: 7,871.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.22 : 14,378.70 = 5,703.76 : x
  2. Step 2: Convert to fraction form
    10,419.22/14,378.70 = 5,703.76/x
  3. Step 3: Cross multiply
    10,419.22x = 14,378.70 × 5,703.76
  4. Step 4: Simplify right side
    10,419.22x = 82,012,653.91
  5. Step 5: Solve for x
    x = 82,012,653.91/10,419.22
  6. Step 6: Final answer
    x = 7,871.29

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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.