Home / 19,646.20-29,420.70-18,771.40

Finding the Fourth Proportional to 19,646.20, 29,420.70 and 18,771.40

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Solution

The fourth proportional to 19,646.20, 29,420.70 and 18,771.40 is: 28,110.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,646.20 : 29,420.70 = 18,771.40 : x
  2. Step 2: Convert to fraction form
    19,646.20/29,420.70 = 18,771.40/x
  3. Step 3: Cross multiply
    19,646.20x = 29,420.70 × 18,771.40
  4. Step 4: Simplify right side
    19,646.20x = 552,267,727.98
  5. Step 5: Solve for x
    x = 552,267,727.98/19,646.20
  6. Step 6: Final answer
    x = 28,110.66

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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.