Home / 13,869.89-20,804.30-7,642.25

Finding the Fourth Proportional to 13,869.89, 20,804.30 and 7,642.25

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Solution

The fourth proportional to 13,869.89, 20,804.30 and 7,642.25 is: 11,463.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.89 : 20,804.30 = 7,642.25 : x
  2. Step 2: Convert to fraction form
    13,869.89/20,804.30 = 7,642.25/x
  3. Step 3: Cross multiply
    13,869.89x = 20,804.30 × 7,642.25
  4. Step 4: Simplify right side
    13,869.89x = 158,991,623.46
  5. Step 5: Solve for x
    x = 158,991,623.46/13,869.89
  6. Step 6: Final answer
    x = 11,463.08

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1.5x scale

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.