Home / 14,478.90-19,971.76-11,116.58

Finding the Fourth Proportional to 14,478.90, 19,971.76 and 11,116.58

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Solution

The fourth proportional to 14,478.90, 19,971.76 and 11,116.58 is: 15,333.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.90 : 19,971.76 = 11,116.58 : x
  2. Step 2: Convert to fraction form
    14,478.90/19,971.76 = 11,116.58/x
  3. Step 3: Cross multiply
    14,478.90x = 19,971.76 × 11,116.58
  4. Step 4: Simplify right side
    14,478.90x = 222,017,667.78
  5. Step 5: Solve for x
    x = 222,017,667.78/14,478.90
  6. Step 6: Final answer
    x = 15,333.88

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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.