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Finding the Fourth Proportional to 28,875.82, 39,848.76 and 16,939.39

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Solution

The fourth proportional to 28,875.82, 39,848.76 and 16,939.39 is: 23,376.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.82 : 39,848.76 = 16,939.39 : x
  2. Step 2: Convert to fraction form
    28,875.82/39,848.76 = 16,939.39/x
  3. Step 3: Cross multiply
    28,875.82x = 39,848.76 × 16,939.39
  4. Step 4: Simplify right side
    28,875.82x = 675,013,686.66
  5. Step 5: Solve for x
    x = 675,013,686.66/28,875.82
  6. Step 6: Final answer
    x = 23,376.43

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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.