Home / 13,609.29-20,424.87-7,037.40

Finding the Fourth Proportional to 13,609.29, 20,424.87 and 7,037.40

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Solution

The fourth proportional to 13,609.29, 20,424.87 and 7,037.40 is: 10,561.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.29 : 20,424.87 = 7,037.40 : x
  2. Step 2: Convert to fraction form
    13,609.29/20,424.87 = 7,037.40/x
  3. Step 3: Cross multiply
    13,609.29x = 20,424.87 × 7,037.40
  4. Step 4: Simplify right side
    13,609.29x = 143,737,980.14
  5. Step 5: Solve for x
    x = 143,737,980.14/13,609.29
  6. Step 6: Final answer
    x = 10,561.75

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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.