Home / 13,084.89-18,057.48-7,116.90

Finding the Fourth Proportional to 13,084.89, 18,057.48 and 7,116.90

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Solution

The fourth proportional to 13,084.89, 18,057.48 and 7,116.90 is: 9,821.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,084.89 : 18,057.48 = 7,116.90 : x
  2. Step 2: Convert to fraction form
    13,084.89/18,057.48 = 7,116.90/x
  3. Step 3: Cross multiply
    13,084.89x = 18,057.48 × 7,116.90
  4. Step 4: Simplify right side
    13,084.89x = 128,513,279.41
  5. Step 5: Solve for x
    x = 128,513,279.41/13,084.89
  6. Step 6: Final answer
    x = 9,821.50

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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.