Home / 13,961.81-19,266.80-7,989.25

Finding the Fourth Proportional to 13,961.81, 19,266.80 and 7,989.25

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Solution

The fourth proportional to 13,961.81, 19,266.80 and 7,989.25 is: 11,024.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.81 : 19,266.80 = 7,989.25 : x
  2. Step 2: Convert to fraction form
    13,961.81/19,266.80 = 7,989.25/x
  3. Step 3: Cross multiply
    13,961.81x = 19,266.80 × 7,989.25
  4. Step 4: Simplify right side
    13,961.81x = 153,927,281.90
  5. Step 5: Solve for x
    x = 153,927,281.90/13,961.81
  6. Step 6: Final answer
    x = 11,024.88

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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.