Home / 30,559.72-45,781.02-20,681.96

Finding the Fourth Proportional to 30,559.72, 45,781.02 and 20,681.96

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Solution

The fourth proportional to 30,559.72, 45,781.02 and 20,681.96 is: 30,983.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,559.72 : 45,781.02 = 20,681.96 : x
  2. Step 2: Convert to fraction form
    30,559.72/45,781.02 = 20,681.96/x
  3. Step 3: Cross multiply
    30,559.72x = 45,781.02 × 20,681.96
  4. Step 4: Simplify right side
    30,559.72x = 946,841,224.40
  5. Step 5: Solve for x
    x = 946,841,224.40/30,559.72
  6. Step 6: Final answer
    x = 30,983.31

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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.