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Finding the Fourth Proportional to 12,899.91, 17,812.41 and 10,510.23

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Solution

The fourth proportional to 12,899.91, 17,812.41 and 10,510.23 is: 14,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.91 : 17,812.41 = 10,510.23 : x
  2. Step 2: Convert to fraction form
    12,899.91/17,812.41 = 10,510.23/x
  3. Step 3: Cross multiply
    12,899.91x = 17,812.41 × 10,510.23
  4. Step 4: Simplify right side
    12,899.91x = 187,212,525.95
  5. Step 5: Solve for x
    x = 187,212,525.95/12,899.91
  6. Step 6: Final answer
    x = 14,512.70

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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.