Home / 28,643.28-42,971.16-11,776.41

Finding the Fourth Proportional to 28,643.28, 42,971.16 and 11,776.41

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Solution

The fourth proportional to 28,643.28, 42,971.16 and 11,776.41 is: 17,667.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,643.28 : 42,971.16 = 11,776.41 : x
  2. Step 2: Convert to fraction form
    28,643.28/42,971.16 = 11,776.41/x
  3. Step 3: Cross multiply
    28,643.28x = 42,971.16 × 11,776.41
  4. Step 4: Simplify right side
    28,643.28x = 506,045,998.34
  5. Step 5: Solve for x
    x = 506,045,998.34/28,643.28
  6. Step 6: Final answer
    x = 17,667.18

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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.