Home / 13,152.65-18,144.68-7,771.41

Finding the Fourth Proportional to 13,152.65, 18,144.68 and 7,771.41

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Solution

The fourth proportional to 13,152.65, 18,144.68 and 7,771.41 is: 10,721.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.65 : 18,144.68 = 7,771.41 : x
  2. Step 2: Convert to fraction form
    13,152.65/18,144.68 = 7,771.41/x
  3. Step 3: Cross multiply
    13,152.65x = 18,144.68 × 7,771.41
  4. Step 4: Simplify right side
    13,152.65x = 141,009,708.74
  5. Step 5: Solve for x
    x = 141,009,708.74/13,152.65
  6. Step 6: Final answer
    x = 10,721.02

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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.