Home / 28,702.21-39,608.77-15,955.06

Finding the Fourth Proportional to 28,702.21, 39,608.77 and 15,955.06

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Solution

The fourth proportional to 28,702.21, 39,608.77 and 15,955.06 is: 22,017.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.21 : 39,608.77 = 15,955.06 : x
  2. Step 2: Convert to fraction form
    28,702.21/39,608.77 = 15,955.06/x
  3. Step 3: Cross multiply
    28,702.21x = 39,608.77 × 15,955.06
  4. Step 4: Simplify right side
    28,702.21x = 631,960,301.88
  5. Step 5: Solve for x
    x = 631,960,301.88/28,702.21
  6. Step 6: Final answer
    x = 22,017.83

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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.