Home / 13,657.26-18,846.81-7,688.91

Finding the Fourth Proportional to 13,657.26, 18,846.81 and 7,688.91

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Solution

The fourth proportional to 13,657.26, 18,846.81 and 7,688.91 is: 10,610.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.26 : 18,846.81 = 7,688.91 : x
  2. Step 2: Convert to fraction form
    13,657.26/18,846.81 = 7,688.91/x
  3. Step 3: Cross multiply
    13,657.26x = 18,846.81 × 7,688.91
  4. Step 4: Simplify right side
    13,657.26x = 144,911,425.88
  5. Step 5: Solve for x
    x = 144,911,425.88/13,657.26
  6. Step 6: Final answer
    x = 10,610.58

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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.