Home / 13,530.08-20,271.90-12,160.51

Finding the Fourth Proportional to 13,530.08, 20,271.90 and 12,160.51

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Solution

The fourth proportional to 13,530.08, 20,271.90 and 12,160.51 is: 18,219.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.08 : 20,271.90 = 12,160.51 : x
  2. Step 2: Convert to fraction form
    13,530.08/20,271.90 = 12,160.51/x
  3. Step 3: Cross multiply
    13,530.08x = 20,271.90 × 12,160.51
  4. Step 4: Simplify right side
    13,530.08x = 246,516,642.67
  5. Step 5: Solve for x
    x = 246,516,642.67/13,530.08
  6. Step 6: Final answer
    x = 18,219.90

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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.