Home / 13,998.56-21,000.80-4,638.05

Finding the Fourth Proportional to 13,998.56, 21,000.80 and 4,638.05

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Solution

The fourth proportional to 13,998.56, 21,000.80 and 4,638.05 is: 6,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.56 : 21,000.80 = 4,638.05 : x
  2. Step 2: Convert to fraction form
    13,998.56/21,000.80 = 4,638.05/x
  3. Step 3: Cross multiply
    13,998.56x = 21,000.80 × 4,638.05
  4. Step 4: Simplify right side
    13,998.56x = 97,402,632.25
  5. Step 5: Solve for x
    x = 97,402,632.25/13,998.56
  6. Step 6: Final answer
    x = 6,958.05

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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.