Home / 30,930.17-42,682.49-16,782.71

Finding the Fourth Proportional to 30,930.17, 42,682.49 and 16,782.71

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Solution

The fourth proportional to 30,930.17, 42,682.49 and 16,782.71 is: 23,159.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,930.17 : 42,682.49 = 16,782.71 : x
  2. Step 2: Convert to fraction form
    30,930.17/42,682.49 = 16,782.71/x
  3. Step 3: Cross multiply
    30,930.17x = 42,682.49 × 16,782.71
  4. Step 4: Simplify right side
    30,930.17x = 716,327,851.75
  5. Step 5: Solve for x
    x = 716,327,851.75/30,930.17
  6. Step 6: Final answer
    x = 23,159.52

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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.