Home / 10,421.22-14,380.92-5,705.40

Finding the Fourth Proportional to 10,421.22, 14,380.92 and 5,705.40

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Solution

The fourth proportional to 10,421.22, 14,380.92 and 5,705.40 is: 7,873.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.22 : 14,380.92 = 5,705.40 : x
  2. Step 2: Convert to fraction form
    10,421.22/14,380.92 = 5,705.40/x
  3. Step 3: Cross multiply
    10,421.22x = 14,380.92 × 5,705.40
  4. Step 4: Simplify right side
    10,421.22x = 82,048,900.97
  5. Step 5: Solve for x
    x = 82,048,900.97/10,421.22
  6. Step 6: Final answer
    x = 7,873.25

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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.