Home / 30,934.56-42,689.60-16,787.28

Finding the Fourth Proportional to 30,934.56, 42,689.60 and 16,787.28

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Solution

The fourth proportional to 30,934.56, 42,689.60 and 16,787.28 is: 23,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.56 : 42,689.60 = 16,787.28 : x
  2. Step 2: Convert to fraction form
    30,934.56/42,689.60 = 16,787.28/x
  3. Step 3: Cross multiply
    30,934.56x = 42,689.60 × 16,787.28
  4. Step 4: Simplify right side
    30,934.56x = 716,642,268.29
  5. Step 5: Solve for x
    x = 716,642,268.29/30,934.56
  6. Step 6: Final answer
    x = 23,166.40

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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.