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Finding the Fourth Proportional to 18,421.70, 27,632.55 and 4,570.70

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Solution

The fourth proportional to 18,421.70, 27,632.55 and 4,570.70 is: 6,856.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.70 : 27,632.55 = 4,570.70 : x
  2. Step 2: Convert to fraction form
    18,421.70/27,632.55 = 4,570.70/x
  3. Step 3: Cross multiply
    18,421.70x = 27,632.55 × 4,570.70
  4. Step 4: Simplify right side
    18,421.70x = 126,300,096.29
  5. Step 5: Solve for x
    x = 126,300,096.29/18,421.70
  6. Step 6: Final answer
    x = 6,856.05

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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.