Home / 19,686.65-27,152.21-12,613.73

Finding the Fourth Proportional to 19,686.65, 27,152.21 and 12,613.73

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Solution

The fourth proportional to 19,686.65, 27,152.21 and 12,613.73 is: 17,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,686.65 : 27,152.21 = 12,613.73 : x
  2. Step 2: Convert to fraction form
    19,686.65/27,152.21 = 12,613.73/x
  3. Step 3: Cross multiply
    19,686.65x = 27,152.21 × 12,613.73
  4. Step 4: Simplify right side
    19,686.65x = 342,490,541.62
  5. Step 5: Solve for x
    x = 342,490,541.62/19,686.65
  6. Step 6: Final answer
    x = 17,397.10

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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.