Home / 28,785.40-39,723.12-16,038.64

Finding the Fourth Proportional to 28,785.40, 39,723.12 and 16,038.64

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Solution

The fourth proportional to 28,785.40, 39,723.12 and 16,038.64 is: 22,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.40 : 39,723.12 = 16,038.64 : x
  2. Step 2: Convert to fraction form
    28,785.40/39,723.12 = 16,038.64/x
  3. Step 3: Cross multiply
    28,785.40x = 39,723.12 × 16,038.64
  4. Step 4: Simplify right side
    28,785.40x = 637,104,821.36
  5. Step 5: Solve for x
    x = 637,104,821.36/28,785.40
  6. Step 6: Final answer
    x = 22,132.92

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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.