Home / 13,260.81-19,900.26-7,020.57

Finding the Fourth Proportional to 13,260.81, 19,900.26 and 7,020.57

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Solution

The fourth proportional to 13,260.81, 19,900.26 and 7,020.57 is: 10,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260.81 : 19,900.26 = 7,020.57 : x
  2. Step 2: Convert to fraction form
    13,260.81/19,900.26 = 7,020.57/x
  3. Step 3: Cross multiply
    13,260.81x = 19,900.26 × 7,020.57
  4. Step 4: Simplify right side
    13,260.81x = 139,711,168.35
  5. Step 5: Solve for x
    x = 139,711,168.35/13,260.81
  6. Step 6: Final answer
    x = 10,535.64

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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.