Home / 28,743.40-39,657.58-16,642.90

Finding the Fourth Proportional to 28,743.40, 39,657.58 and 16,642.90

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Solution

The fourth proportional to 28,743.40, 39,657.58 and 16,642.90 is: 22,962.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,743.40 : 39,657.58 = 16,642.90 : x
  2. Step 2: Convert to fraction form
    28,743.40/39,657.58 = 16,642.90/x
  3. Step 3: Cross multiply
    28,743.40x = 39,657.58 × 16,642.90
  4. Step 4: Simplify right side
    28,743.40x = 660,017,138.18
  5. Step 5: Solve for x
    x = 660,017,138.18/28,743.40
  6. Step 6: Final answer
    x = 22,962.39

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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.