Home / 30,934.47-42,690.39-16,787.31

Finding the Fourth Proportional to 30,934.47, 42,690.39 and 16,787.31

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Solution

The fourth proportional to 30,934.47, 42,690.39 and 16,787.31 is: 23,166.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.47 : 42,690.39 = 16,787.31 : x
  2. Step 2: Convert to fraction form
    30,934.47/42,690.39 = 16,787.31/x
  3. Step 3: Cross multiply
    30,934.47x = 42,690.39 × 16,787.31
  4. Step 4: Simplify right side
    30,934.47x = 716,656,810.95
  5. Step 5: Solve for x
    x = 716,656,810.95/30,934.47
  6. Step 6: Final answer
    x = 23,166.93

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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.