Home / 10,421.46-14,381.15-5,705.64

Finding the Fourth Proportional to 10,421.46, 14,381.15 and 5,705.64

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Solution

The fourth proportional to 10,421.46, 14,381.15 and 5,705.64 is: 7,873.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.46 : 14,381.15 = 5,705.64 : x
  2. Step 2: Convert to fraction form
    10,421.46/14,381.15 = 5,705.64/x
  3. Step 3: Cross multiply
    10,421.46x = 14,381.15 × 5,705.64
  4. Step 4: Simplify right side
    10,421.46x = 82,053,636.16
  5. Step 5: Solve for x
    x = 82,053,636.16/10,421.46
  6. Step 6: Final answer
    x = 7,873.53

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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.