Home / 28,905.77-39,893.09-16,970.82

Finding the Fourth Proportional to 28,905.77, 39,893.09 and 16,970.82

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Solution

The fourth proportional to 28,905.77, 39,893.09 and 16,970.82 is: 23,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.77 : 39,893.09 = 16,970.82 : x
  2. Step 2: Convert to fraction form
    28,905.77/39,893.09 = 16,970.82/x
  3. Step 3: Cross multiply
    28,905.77x = 39,893.09 × 16,970.82
  4. Step 4: Simplify right side
    28,905.77x = 677,018,364.78
  5. Step 5: Solve for x
    x = 677,018,364.78/28,905.77
  6. Step 6: Final answer
    x = 23,421.57

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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.