Home / 28,320.64-39,072.74-17,561.64

Finding the Fourth Proportional to 28,320.64, 39,072.74 and 17,561.64

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Solution

The fourth proportional to 28,320.64, 39,072.74 and 17,561.64 is: 24,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.64 : 39,072.74 = 17,561.64 : x
  2. Step 2: Convert to fraction form
    28,320.64/39,072.74 = 17,561.64/x
  3. Step 3: Cross multiply
    28,320.64x = 39,072.74 × 17,561.64
  4. Step 4: Simplify right side
    28,320.64x = 686,181,393.69
  5. Step 5: Solve for x
    x = 686,181,393.69/28,320.64
  6. Step 6: Final answer
    x = 24,229.02

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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.