Home / 20,706.49-28,574.18-12,653.61

Finding the Fourth Proportional to 20,706.49, 28,574.18 and 12,653.61

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Solution

The fourth proportional to 20,706.49, 28,574.18 and 12,653.61 is: 17,461.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.49 : 28,574.18 = 12,653.61 : x
  2. Step 2: Convert to fraction form
    20,706.49/28,574.18 = 12,653.61/x
  3. Step 3: Cross multiply
    20,706.49x = 28,574.18 × 12,653.61
  4. Step 4: Simplify right side
    20,706.49x = 361,566,529.79
  5. Step 5: Solve for x
    x = 361,566,529.79/20,706.49
  6. Step 6: Final answer
    x = 17,461.51

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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.