Home / 30,681.11-45,993.96-21,325.53

Finding the Fourth Proportional to 30,681.11, 45,993.96 and 21,325.53

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Solution

The fourth proportional to 30,681.11, 45,993.96 and 21,325.53 is: 31,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,681.11 : 45,993.96 = 21,325.53 : x
  2. Step 2: Convert to fraction form
    30,681.11/45,993.96 = 21,325.53/x
  3. Step 3: Cross multiply
    30,681.11x = 45,993.96 × 21,325.53
  4. Step 4: Simplify right side
    30,681.11x = 980,845,573.80
  5. Step 5: Solve for x
    x = 980,845,573.80/30,681.11
  6. Step 6: Final answer
    x = 31,969.04

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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.