Home / 13,755.81-20,633.75-4,990.74

Finding the Fourth Proportional to 13,755.81, 20,633.75 and 4,990.74

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Solution

The fourth proportional to 13,755.81, 20,633.75 and 4,990.74 is: 7,486.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.81 : 20,633.75 = 4,990.74 : x
  2. Step 2: Convert to fraction form
    13,755.81/20,633.75 = 4,990.74/x
  3. Step 3: Cross multiply
    13,755.81x = 20,633.75 × 4,990.74
  4. Step 4: Simplify right side
    13,755.81x = 102,977,681.48
  5. Step 5: Solve for x
    x = 102,977,681.48/13,755.81
  6. Step 6: Final answer
    x = 7,486.12

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1.5x scale

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.