Home / 13,746.68-18,969.69-7,777.38

Finding the Fourth Proportional to 13,746.68, 18,969.69 and 7,777.38

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Solution

The fourth proportional to 13,746.68, 18,969.69 and 7,777.38 is: 10,732.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.68 : 18,969.69 = 7,777.38 : x
  2. Step 2: Convert to fraction form
    13,746.68/18,969.69 = 7,777.38/x
  3. Step 3: Cross multiply
    13,746.68x = 18,969.69 × 7,777.38
  4. Step 4: Simplify right side
    13,746.68x = 147,534,587.91
  5. Step 5: Solve for x
    x = 147,534,587.91/13,746.68
  6. Step 6: Final answer
    x = 10,732.38

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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.