Home / 18,118.08-27,146.36-8,762.50

Finding the Fourth Proportional to 18,118.08, 27,146.36 and 8,762.50

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Solution

The fourth proportional to 18,118.08, 27,146.36 and 8,762.50 is: 13,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.08 : 27,146.36 = 8,762.50 : x
  2. Step 2: Convert to fraction form
    18,118.08/27,146.36 = 8,762.50/x
  3. Step 3: Cross multiply
    18,118.08x = 27,146.36 × 8,762.50
  4. Step 4: Simplify right side
    18,118.08x = 237,869,979.50
  5. Step 5: Solve for x
    x = 237,869,979.50/18,118.08
  6. Step 6: Final answer
    x = 13,128.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.