Home / 13,630.40-20,464.32-7,061.12

Finding the Fourth Proportional to 13,630.40, 20,464.32 and 7,061.12

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Solution

The fourth proportional to 13,630.40, 20,464.32 and 7,061.12 is: 10,601.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.40 : 20,464.32 = 7,061.12 : x
  2. Step 2: Convert to fraction form
    13,630.40/20,464.32 = 7,061.12/x
  3. Step 3: Cross multiply
    13,630.40x = 20,464.32 × 7,061.12
  4. Step 4: Simplify right side
    13,630.40x = 144,501,019.24
  5. Step 5: Solve for x
    x = 144,501,019.24/13,630.40
  6. Step 6: Final answer
    x = 10,601.38

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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.