Home / 20,352.10-30,491.70-18,019.30

Finding the Fourth Proportional to 20,352.10, 30,491.70 and 18,019.30

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Solution

The fourth proportional to 20,352.10, 30,491.70 and 18,019.30 is: 26,996.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.10 : 30,491.70 = 18,019.30 : x
  2. Step 2: Convert to fraction form
    20,352.10/30,491.70 = 18,019.30/x
  3. Step 3: Cross multiply
    20,352.10x = 30,491.70 × 18,019.30
  4. Step 4: Simplify right side
    20,352.10x = 549,439,089.81
  5. Step 5: Solve for x
    x = 549,439,089.81/20,352.10
  6. Step 6: Final answer
    x = 26,996.68

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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.