Home / 10,972.30-16,439.55-5,116.90

Finding the Fourth Proportional to 10,972.30, 16,439.55 and 5,116.90

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Solution

The fourth proportional to 10,972.30, 16,439.55 and 5,116.90 is: 7,666.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.30 : 16,439.55 = 5,116.90 : x
  2. Step 2: Convert to fraction form
    10,972.30/16,439.55 = 5,116.90/x
  3. Step 3: Cross multiply
    10,972.30x = 16,439.55 × 5,116.90
  4. Step 4: Simplify right side
    10,972.30x = 84,119,533.40
  5. Step 5: Solve for x
    x = 84,119,533.40/10,972.30
  6. Step 6: Final answer
    x = 7,666.54

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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.