Home / 12,727.28-17,572.75-8,488.35

Finding the Fourth Proportional to 12,727.28, 17,572.75 and 8,488.35

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Solution

The fourth proportional to 12,727.28, 17,572.75 and 8,488.35 is: 11,719.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,727.28 : 17,572.75 = 8,488.35 : x
  2. Step 2: Convert to fraction form
    12,727.28/17,572.75 = 8,488.35/x
  3. Step 3: Cross multiply
    12,727.28x = 17,572.75 × 8,488.35
  4. Step 4: Simplify right side
    12,727.28x = 149,163,652.46
  5. Step 5: Solve for x
    x = 149,163,652.46/12,727.28
  6. Step 6: Final answer
    x = 11,719.99

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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.