Home / 13,411.68-18,510.24-12,821.04

Finding the Fourth Proportional to 13,411.68, 18,510.24 and 12,821.04

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Solution

The fourth proportional to 13,411.68, 18,510.24 and 12,821.04 is: 17,695.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.68 : 18,510.24 = 12,821.04 : x
  2. Step 2: Convert to fraction form
    13,411.68/18,510.24 = 12,821.04/x
  3. Step 3: Cross multiply
    13,411.68x = 18,510.24 × 12,821.04
  4. Step 4: Simplify right side
    13,411.68x = 237,320,527.45
  5. Step 5: Solve for x
    x = 237,320,527.45/13,411.68
  6. Step 6: Final answer
    x = 17,695.06

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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.