Home / 30,938.60-42,695.42-16,791.46

Finding the Fourth Proportional to 30,938.60, 42,695.42 and 16,791.46

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Solution

The fourth proportional to 30,938.60, 42,695.42 and 16,791.46 is: 23,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.60 : 42,695.42 = 16,791.46 : x
  2. Step 2: Convert to fraction form
    30,938.60/42,695.42 = 16,791.46/x
  3. Step 3: Cross multiply
    30,938.60x = 42,695.42 × 16,791.46
  4. Step 4: Simplify right side
    30,938.60x = 716,918,437.11
  5. Step 5: Solve for x
    x = 716,918,437.11/30,938.60
  6. Step 6: Final answer
    x = 23,172.30

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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.