Home / 10,421.68-14,381.56-5,705.88

Finding the Fourth Proportional to 10,421.68, 14,381.56 and 5,705.88

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Solution

The fourth proportional to 10,421.68, 14,381.56 and 5,705.88 is: 7,873.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.68 : 14,381.56 = 5,705.88 : x
  2. Step 2: Convert to fraction form
    10,421.68/14,381.56 = 5,705.88/x
  3. Step 3: Cross multiply
    10,421.68x = 14,381.56 × 5,705.88
  4. Step 4: Simplify right side
    10,421.68x = 82,059,455.57
  5. Step 5: Solve for x
    x = 82,059,455.57/10,421.68
  6. Step 6: Final answer
    x = 7,873.92

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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.