Home / 43,368.40-65,007.86-21,154.34

Finding the Fourth Proportional to 43,368.40, 65,007.86 and 21,154.34

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Solution

The fourth proportional to 43,368.40, 65,007.86 and 21,154.34 is: 31,709.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,368.40 : 65,007.86 = 21,154.34 : x
  2. Step 2: Convert to fraction form
    43,368.40/65,007.86 = 21,154.34/x
  3. Step 3: Cross multiply
    43,368.40x = 65,007.86 × 21,154.34
  4. Step 4: Simplify right side
    43,368.40x = 1,375,198,373.11
  5. Step 5: Solve for x
    x = 1,375,198,373.11/43,368.40
  6. Step 6: Final answer
    x = 31,709.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.