Home / 13,999.11-21,000.80-4,641.48

Finding the Fourth Proportional to 13,999.11, 21,000.80 and 4,641.48

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Solution

The fourth proportional to 13,999.11, 21,000.80 and 4,641.48 is: 6,962.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.11 : 21,000.80 = 4,641.48 : x
  2. Step 2: Convert to fraction form
    13,999.11/21,000.80 = 4,641.48/x
  3. Step 3: Cross multiply
    13,999.11x = 21,000.80 × 4,641.48
  4. Step 4: Simplify right side
    13,999.11x = 97,474,769.98
  5. Step 5: Solve for x
    x = 97,474,769.98/13,999.11
  6. Step 6: Final answer
    x = 6,962.93

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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.