Home / 40,309.84-55,568.98-28,172.64

Finding the Fourth Proportional to 40,309.84, 55,568.98 and 28,172.64

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Solution

The fourth proportional to 40,309.84, 55,568.98 and 28,172.64 is: 38,837.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,309.84 : 55,568.98 = 28,172.64 : x
  2. Step 2: Convert to fraction form
    40,309.84/55,568.98 = 28,172.64/x
  3. Step 3: Cross multiply
    40,309.84x = 55,568.98 × 28,172.64
  4. Step 4: Simplify right side
    40,309.84x = 1,565,524,868.71
  5. Step 5: Solve for x
    x = 1,565,524,868.71/40,309.84
  6. Step 6: Final answer
    x = 38,837.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.