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Finding the Fourth Proportional to 35,689.86, 53,568 and 18,172.80

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Solution

The fourth proportional to 35,689.86, 53,568 and 18,172.80 is: 27,276.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,689.86 : 53,568 = 18,172.80 : x
  2. Step 2: Convert to fraction form
    35,689.86/53,568 = 18,172.80/x
  3. Step 3: Cross multiply
    35,689.86x = 53,568 × 18,172.80
  4. Step 4: Simplify right side
    35,689.86x = 973,480,550.40
  5. Step 5: Solve for x
    x = 973,480,550.40/35,689.86
  6. Step 6: Final answer
    x = 27,276.11

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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.