Home / 30,690.66-42,355.33-18,756.28

Finding the Fourth Proportional to 30,690.66, 42,355.33 and 18,756.28

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Solution

The fourth proportional to 30,690.66, 42,355.33 and 18,756.28 is: 25,885.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,690.66 : 42,355.33 = 18,756.28 : x
  2. Step 2: Convert to fraction form
    30,690.66/42,355.33 = 18,756.28/x
  3. Step 3: Cross multiply
    30,690.66x = 42,355.33 × 18,756.28
  4. Step 4: Simplify right side
    30,690.66x = 794,428,428.97
  5. Step 5: Solve for x
    x = 794,428,428.97/30,690.66
  6. Step 6: Final answer
    x = 25,885.02

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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.