Home / 13,545.40-20,322.24-6,435.04

Finding the Fourth Proportional to 13,545.40, 20,322.24 and 6,435.04

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Solution

The fourth proportional to 13,545.40, 20,322.24 and 6,435.04 is: 9,654.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.40 : 20,322.24 = 6,435.04 : x
  2. Step 2: Convert to fraction form
    13,545.40/20,322.24 = 6,435.04/x
  3. Step 3: Cross multiply
    13,545.40x = 20,322.24 × 6,435.04
  4. Step 4: Simplify right side
    13,545.40x = 130,774,427.29
  5. Step 5: Solve for x
    x = 130,774,427.29/13,545.40
  6. Step 6: Final answer
    x = 9,654.53

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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.