Home / 21,472.99-29,632.70-12,518.75

Finding the Fourth Proportional to 21,472.99, 29,632.70 and 12,518.75

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Solution

The fourth proportional to 21,472.99, 29,632.70 and 12,518.75 is: 17,275.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.99 : 29,632.70 = 12,518.75 : x
  2. Step 2: Convert to fraction form
    21,472.99/29,632.70 = 12,518.75/x
  3. Step 3: Cross multiply
    21,472.99x = 29,632.70 × 12,518.75
  4. Step 4: Simplify right side
    21,472.99x = 370,964,468.50
  5. Step 5: Solve for x
    x = 370,964,468.50/21,472.99
  6. Step 6: Final answer
    x = 17,275.87

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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.