Home / 30,934.61-42,689.90-16,787.45

Finding the Fourth Proportional to 30,934.61, 42,689.90 and 16,787.45

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Solution

The fourth proportional to 30,934.61, 42,689.90 and 16,787.45 is: 23,166.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.61 : 42,689.90 = 16,787.45 : x
  2. Step 2: Convert to fraction form
    30,934.61/42,689.90 = 16,787.45/x
  3. Step 3: Cross multiply
    30,934.61x = 42,689.90 × 16,787.45
  4. Step 4: Simplify right side
    30,934.61x = 716,654,710.45
  5. Step 5: Solve for x
    x = 716,654,710.45/30,934.61
  6. Step 6: Final answer
    x = 23,166.76

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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.