Home / 13,998.61-21,000.04-4,640.98

Finding the Fourth Proportional to 13,998.61, 21,000.04 and 4,640.98

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Solution

The fourth proportional to 13,998.61, 21,000.04 and 4,640.98 is: 6,962.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.61 : 21,000.04 = 4,640.98 : x
  2. Step 2: Convert to fraction form
    13,998.61/21,000.04 = 4,640.98/x
  3. Step 3: Cross multiply
    13,998.61x = 21,000.04 × 4,640.98
  4. Step 4: Simplify right side
    13,998.61x = 97,460,765.64
  5. Step 5: Solve for x
    x = 97,460,765.64/13,998.61
  6. Step 6: Final answer
    x = 6,962.17

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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.