Home / 30,938.67-42,695.28-16,791.57

Finding the Fourth Proportional to 30,938.67, 42,695.28 and 16,791.57

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Solution

The fourth proportional to 30,938.67, 42,695.28 and 16,791.57 is: 23,172.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.67 : 42,695.28 = 16,791.57 : x
  2. Step 2: Convert to fraction form
    30,938.67/42,695.28 = 16,791.57/x
  3. Step 3: Cross multiply
    30,938.67x = 42,695.28 × 16,791.57
  4. Step 4: Simplify right side
    30,938.67x = 716,920,782.79
  5. Step 5: Solve for x
    x = 716,920,782.79/30,938.67
  6. Step 6: Final answer
    x = 23,172.32

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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.