Home / 13,113.63-18,096.59-7,145.35

Finding the Fourth Proportional to 13,113.63, 18,096.59 and 7,145.35

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Solution

The fourth proportional to 13,113.63, 18,096.59 and 7,145.35 is: 9,860.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.63 : 18,096.59 = 7,145.35 : x
  2. Step 2: Convert to fraction form
    13,113.63/18,096.59 = 7,145.35/x
  3. Step 3: Cross multiply
    13,113.63x = 18,096.59 × 7,145.35
  4. Step 4: Simplify right side
    13,113.63x = 129,306,433.63
  5. Step 5: Solve for x
    x = 129,306,433.63/13,113.63
  6. Step 6: Final answer
    x = 9,860.46

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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.