Home / 30,964.28-42,731.34-18,860.60

Finding the Fourth Proportional to 30,964.28, 42,731.34 and 18,860.60

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Solution

The fourth proportional to 30,964.28, 42,731.34 and 18,860.60 is: 26,028.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,964.28 : 42,731.34 = 18,860.60 : x
  2. Step 2: Convert to fraction form
    30,964.28/42,731.34 = 18,860.60/x
  3. Step 3: Cross multiply
    30,964.28x = 42,731.34 × 18,860.60
  4. Step 4: Simplify right side
    30,964.28x = 805,938,711.20
  5. Step 5: Solve for x
    x = 805,938,711.20/30,964.28
  6. Step 6: Final answer
    x = 26,028.01

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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.