Home / 12,518.28-17,280.81-8,271.99

Finding the Fourth Proportional to 12,518.28, 17,280.81 and 8,271.99

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Solution

The fourth proportional to 12,518.28, 17,280.81 and 8,271.99 is: 11,419.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.28 : 17,280.81 = 8,271.99 : x
  2. Step 2: Convert to fraction form
    12,518.28/17,280.81 = 8,271.99/x
  3. Step 3: Cross multiply
    12,518.28x = 17,280.81 × 8,271.99
  4. Step 4: Simplify right side
    12,518.28x = 142,946,687.51
  5. Step 5: Solve for x
    x = 142,946,687.51/12,518.28
  6. Step 6: Final answer
    x = 11,419.04

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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.