Home / 21,155.02-31,730.04-8,504.26

Finding the Fourth Proportional to 21,155.02, 31,730.04 and 8,504.26

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Solution

The fourth proportional to 21,155.02, 31,730.04 and 8,504.26 is: 12,755.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.02 : 31,730.04 = 8,504.26 : x
  2. Step 2: Convert to fraction form
    21,155.02/31,730.04 = 8,504.26/x
  3. Step 3: Cross multiply
    21,155.02x = 31,730.04 × 8,504.26
  4. Step 4: Simplify right side
    21,155.02x = 269,840,509.97
  5. Step 5: Solve for x
    x = 269,840,509.97/21,155.02
  6. Step 6: Final answer
    x = 12,755.39

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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.