Home / 13,998.52-21,000.74-4,638.02

Finding the Fourth Proportional to 13,998.52, 21,000.74 and 4,638.02

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Solution

The fourth proportional to 13,998.52, 21,000.74 and 4,638.02 is: 6,958.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.52 : 21,000.74 = 4,638.02 : x
  2. Step 2: Convert to fraction form
    13,998.52/21,000.74 = 4,638.02/x
  3. Step 3: Cross multiply
    13,998.52x = 21,000.74 × 4,638.02
  4. Step 4: Simplify right side
    13,998.52x = 97,401,852.13
  5. Step 5: Solve for x
    x = 97,401,852.13/13,998.52
  6. Step 6: Final answer
    x = 6,958.01

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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.