Home / 13,985.11-20,970.84-4,976.22

Finding the Fourth Proportional to 13,985.11, 20,970.84 and 4,976.22

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Solution

The fourth proportional to 13,985.11, 20,970.84 and 4,976.22 is: 7,461.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.11 : 20,970.84 = 4,976.22 : x
  2. Step 2: Convert to fraction form
    13,985.11/20,970.84 = 4,976.22/x
  3. Step 3: Cross multiply
    13,985.11x = 20,970.84 × 4,976.22
  4. Step 4: Simplify right side
    13,985.11x = 104,355,513.42
  5. Step 5: Solve for x
    x = 104,355,513.42/13,985.11
  6. Step 6: Final answer
    x = 7,461.90

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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.