Home / 13,631.33-18,809.93-7,967.40

Finding the Fourth Proportional to 13,631.33, 18,809.93 and 7,967.40

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Solution

The fourth proportional to 13,631.33, 18,809.93 and 7,967.40 is: 10,994.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.33 : 18,809.93 = 7,967.40 : x
  2. Step 2: Convert to fraction form
    13,631.33/18,809.93 = 7,967.40/x
  3. Step 3: Cross multiply
    13,631.33x = 18,809.93 × 7,967.40
  4. Step 4: Simplify right side
    13,631.33x = 149,866,256.20
  5. Step 5: Solve for x
    x = 149,866,256.20/13,631.33
  6. Step 6: Final answer
    x = 10,994.25

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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.