Home / 13,548.65-20,312.03-12,455.15

Finding the Fourth Proportional to 13,548.65, 20,312.03 and 12,455.15

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Solution

The fourth proportional to 13,548.65, 20,312.03 and 12,455.15 is: 18,672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,548.65 : 20,312.03 = 12,455.15 : x
  2. Step 2: Convert to fraction form
    13,548.65/20,312.03 = 12,455.15/x
  3. Step 3: Cross multiply
    13,548.65x = 20,312.03 × 12,455.15
  4. Step 4: Simplify right side
    13,548.65x = 252,989,216.62
  5. Step 5: Solve for x
    x = 252,989,216.62/13,548.65
  6. Step 6: Final answer
    x = 18,672.66

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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.