Home / 43,128.75-64,693.13-11,964

Finding the Fourth Proportional to 43,128.75, 64,693.13 and 11,964

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Solution

The fourth proportional to 43,128.75, 64,693.13 and 11,964 is: 17,946

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,128.75 : 64,693.13 = 11,964 : x
  2. Step 2: Convert to fraction form
    43,128.75/64,693.13 = 11,964/x
  3. Step 3: Cross multiply
    43,128.75x = 64,693.13 × 11,964
  4. Step 4: Simplify right side
    43,128.75x = 773,988,547.50
  5. Step 5: Solve for x
    x = 773,988,547.50/43,128.75
  6. Step 6: Final answer
    x = 17,946

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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.