Home / 13,731.24-18,948.88-7,762.68

Finding the Fourth Proportional to 13,731.24, 18,948.88 and 7,762.68

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Solution

The fourth proportional to 13,731.24, 18,948.88 and 7,762.68 is: 10,712.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.24 : 18,948.88 = 7,762.68 : x
  2. Step 2: Convert to fraction form
    13,731.24/18,948.88 = 7,762.68/x
  3. Step 3: Cross multiply
    13,731.24x = 18,948.88 × 7,762.68
  4. Step 4: Simplify right side
    13,731.24x = 147,094,091.80
  5. Step 5: Solve for x
    x = 147,094,091.80/13,731.24
  6. Step 6: Final answer
    x = 10,712.37

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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.