Home / 18,717.66-25,840.74-12,758.08

Finding the Fourth Proportional to 18,717.66, 25,840.74 and 12,758.08

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Solution

The fourth proportional to 18,717.66, 25,840.74 and 12,758.08 is: 17,613.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.66 : 25,840.74 = 12,758.08 : x
  2. Step 2: Convert to fraction form
    18,717.66/25,840.74 = 12,758.08/x
  3. Step 3: Cross multiply
    18,717.66x = 25,840.74 × 12,758.08
  4. Step 4: Simplify right side
    18,717.66x = 329,678,228.18
  5. Step 5: Solve for x
    x = 329,678,228.18/18,717.66
  6. Step 6: Final answer
    x = 17,613.22

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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.