Home / 28,606.96-39,468.32-18,543.20

Finding the Fourth Proportional to 28,606.96, 39,468.32 and 18,543.20

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Solution

The fourth proportional to 28,606.96, 39,468.32 and 18,543.20 is: 25,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.96 : 39,468.32 = 18,543.20 : x
  2. Step 2: Convert to fraction form
    28,606.96/39,468.32 = 18,543.20/x
  3. Step 3: Cross multiply
    28,606.96x = 39,468.32 × 18,543.20
  4. Step 4: Simplify right side
    28,606.96x = 731,868,951.42
  5. Step 5: Solve for x
    x = 731,868,951.42/28,606.96
  6. Step 6: Final answer
    x = 25,583.60

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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.