Home / 30,966.28-42,734.10-18,862.60

Finding the Fourth Proportional to 30,966.28, 42,734.10 and 18,862.60

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Solution

The fourth proportional to 30,966.28, 42,734.10 and 18,862.60 is: 26,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,966.28 : 42,734.10 = 18,862.60 : x
  2. Step 2: Convert to fraction form
    30,966.28/42,734.10 = 18,862.60/x
  3. Step 3: Cross multiply
    30,966.28x = 42,734.10 × 18,862.60
  4. Step 4: Simplify right side
    30,966.28x = 806,076,234.66
  5. Step 5: Solve for x
    x = 806,076,234.66/30,966.28
  6. Step 6: Final answer
    x = 26,030.77

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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.