Home / 13,669.12-20,507.40-4,435.12

Finding the Fourth Proportional to 13,669.12, 20,507.40 and 4,435.12

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Solution

The fourth proportional to 13,669.12, 20,507.40 and 4,435.12 is: 6,653.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.12 : 20,507.40 = 4,435.12 : x
  2. Step 2: Convert to fraction form
    13,669.12/20,507.40 = 4,435.12/x
  3. Step 3: Cross multiply
    13,669.12x = 20,507.40 × 4,435.12
  4. Step 4: Simplify right side
    13,669.12x = 90,952,779.89
  5. Step 5: Solve for x
    x = 90,952,779.89/13,669.12
  6. Step 6: Final answer
    x = 6,653.89

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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.