Home / 18,681.65-25,778.58-11,126.93

Finding the Fourth Proportional to 18,681.65, 25,778.58 and 11,126.93

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Solution

The fourth proportional to 18,681.65, 25,778.58 and 11,126.93 is: 15,353.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.65 : 25,778.58 = 11,126.93 : x
  2. Step 2: Convert to fraction form
    18,681.65/25,778.58 = 11,126.93/x
  3. Step 3: Cross multiply
    18,681.65x = 25,778.58 × 11,126.93
  4. Step 4: Simplify right side
    18,681.65x = 286,836,326.27
  5. Step 5: Solve for x
    x = 286,836,326.27/18,681.65
  6. Step 6: Final answer
    x = 15,353.91

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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.