Home / 28,886.61-39,863.03-16,140.05

Finding the Fourth Proportional to 28,886.61, 39,863.03 and 16,140.05

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Solution

The fourth proportional to 28,886.61, 39,863.03 and 16,140.05 is: 22,272.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.61 : 39,863.03 = 16,140.05 : x
  2. Step 2: Convert to fraction form
    28,886.61/39,863.03 = 16,140.05/x
  3. Step 3: Cross multiply
    28,886.61x = 39,863.03 × 16,140.05
  4. Step 4: Simplify right side
    28,886.61x = 643,391,017.34
  5. Step 5: Solve for x
    x = 643,391,017.34/28,886.61
  6. Step 6: Final answer
    x = 22,272.98

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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.