Home / 13,707.16-18,915.86-7,419.56

Finding the Fourth Proportional to 13,707.16, 18,915.86 and 7,419.56

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Solution

The fourth proportional to 13,707.16, 18,915.86 and 7,419.56 is: 10,238.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.16 : 18,915.86 = 7,419.56 : x
  2. Step 2: Convert to fraction form
    13,707.16/18,915.86 = 7,419.56/x
  3. Step 3: Cross multiply
    13,707.16x = 18,915.86 × 7,419.56
  4. Step 4: Simplify right side
    13,707.16x = 140,347,358.22
  5. Step 5: Solve for x
    x = 140,347,358.22/13,707.16
  6. Step 6: Final answer
    x = 10,238.98

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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.