Home / 13,556.16-18,701.28-7,963.20

Finding the Fourth Proportional to 13,556.16, 18,701.28 and 7,963.20

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Solution

The fourth proportional to 13,556.16, 18,701.28 and 7,963.20 is: 10,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,556.16 : 18,701.28 = 7,963.20 : x
  2. Step 2: Convert to fraction form
    13,556.16/18,701.28 = 7,963.20/x
  3. Step 3: Cross multiply
    13,556.16x = 18,701.28 × 7,963.20
  4. Step 4: Simplify right side
    13,556.16x = 148,922,032.90
  5. Step 5: Solve for x
    x = 148,922,032.90/13,556.16
  6. Step 6: Final answer
    x = 10,985.56

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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.