Home / 28,985.03-43,403.15-20,087.68

Finding the Fourth Proportional to 28,985.03, 43,403.15 and 20,087.68

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Solution

The fourth proportional to 28,985.03, 43,403.15 and 20,087.68 is: 30,079.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.03 : 43,403.15 = 20,087.68 : x
  2. Step 2: Convert to fraction form
    28,985.03/43,403.15 = 20,087.68/x
  3. Step 3: Cross multiply
    28,985.03x = 43,403.15 × 20,087.68
  4. Step 4: Simplify right side
    28,985.03x = 871,868,588.19
  5. Step 5: Solve for x
    x = 871,868,588.19/28,985.03
  6. Step 6: Final answer
    x = 30,079.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.