Home / 30,478.28-45,731.79-10,766.12

Finding the Fourth Proportional to 30,478.28, 45,731.79 and 10,766.12

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Solution

The fourth proportional to 30,478.28, 45,731.79 and 10,766.12 is: 16,154.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,478.28 : 45,731.79 = 10,766.12 : x
  2. Step 2: Convert to fraction form
    30,478.28/45,731.79 = 10,766.12/x
  3. Step 3: Cross multiply
    30,478.28x = 45,731.79 × 10,766.12
  4. Step 4: Simplify right side
    30,478.28x = 492,353,710.30
  5. Step 5: Solve for x
    x = 492,353,710.30/30,478.28
  6. Step 6: Final answer
    x = 16,154.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.