Home / 10,420.81-14,380.73-5,705.11

Finding the Fourth Proportional to 10,420.81, 14,380.73 and 5,705.11

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Solution

The fourth proportional to 10,420.81, 14,380.73 and 5,705.11 is: 7,873.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.81 : 14,380.73 = 5,705.11 : x
  2. Step 2: Convert to fraction form
    10,420.81/14,380.73 = 5,705.11/x
  3. Step 3: Cross multiply
    10,420.81x = 14,380.73 × 5,705.11
  4. Step 4: Simplify right side
    10,420.81x = 82,043,646.53
  5. Step 5: Solve for x
    x = 82,043,646.53/10,420.81
  6. Step 6: Final answer
    x = 7,873.06

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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.