Home / 30,934.89-42,690.15-16,787.74

Finding the Fourth Proportional to 30,934.89, 42,690.15 and 16,787.74

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Solution

The fourth proportional to 30,934.89, 42,690.15 and 16,787.74 is: 23,167.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.89 : 42,690.15 = 16,787.74 : x
  2. Step 2: Convert to fraction form
    30,934.89/42,690.15 = 16,787.74/x
  3. Step 3: Cross multiply
    30,934.89x = 42,690.15 × 16,787.74
  4. Step 4: Simplify right side
    30,934.89x = 716,670,883.34
  5. Step 5: Solve for x
    x = 716,670,883.34/30,934.89
  6. Step 6: Final answer
    x = 23,167.07

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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.