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Finding the Fourth Proportional to 18,271.67, 27,407.51 and 4,420.67

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Solution

The fourth proportional to 18,271.67, 27,407.51 and 4,420.67 is: 6,631.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.67 : 27,407.51 = 4,420.67 : x
  2. Step 2: Convert to fraction form
    18,271.67/27,407.51 = 4,420.67/x
  3. Step 3: Cross multiply
    18,271.67x = 27,407.51 × 4,420.67
  4. Step 4: Simplify right side
    18,271.67x = 121,159,398.09
  5. Step 5: Solve for x
    x = 121,159,398.09/18,271.67
  6. Step 6: Final answer
    x = 6,631.00

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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.