Home / 13,722.81-18,937.48-7,435.19

Finding the Fourth Proportional to 13,722.81, 18,937.48 and 7,435.19

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Solution

The fourth proportional to 13,722.81, 18,937.48 and 7,435.19 is: 10,260.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.81 : 18,937.48 = 7,435.19 : x
  2. Step 2: Convert to fraction form
    13,722.81/18,937.48 = 7,435.19/x
  3. Step 3: Cross multiply
    13,722.81x = 18,937.48 × 7,435.19
  4. Step 4: Simplify right side
    13,722.81x = 140,803,648.65
  5. Step 5: Solve for x
    x = 140,803,648.65/13,722.81
  6. Step 6: Final answer
    x = 10,260.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.