Home / 28,872.47-39,832.83-16,931.45

Finding the Fourth Proportional to 28,872.47, 39,832.83 and 16,931.45

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Solution

The fourth proportional to 28,872.47, 39,832.83 and 16,931.45 is: 23,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,872.47 : 39,832.83 = 16,931.45 : x
  2. Step 2: Convert to fraction form
    28,872.47/39,832.83 = 16,931.45/x
  3. Step 3: Cross multiply
    28,872.47x = 39,832.83 × 16,931.45
  4. Step 4: Simplify right side
    28,872.47x = 674,427,669.09
  5. Step 5: Solve for x
    x = 674,427,669.09/28,872.47
  6. Step 6: Final answer
    x = 23,358.85

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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.