Home / 13,657.32-18,847.08-7,688.70

Finding the Fourth Proportional to 13,657.32, 18,847.08 and 7,688.70

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Solution

The fourth proportional to 13,657.32, 18,847.08 and 7,688.70 is: 10,610.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.32 : 18,847.08 = 7,688.70 : x
  2. Step 2: Convert to fraction form
    13,657.32/18,847.08 = 7,688.70/x
  3. Step 3: Cross multiply
    13,657.32x = 18,847.08 × 7,688.70
  4. Step 4: Simplify right side
    13,657.32x = 144,909,544.00
  5. Step 5: Solve for x
    x = 144,909,544.00/13,657.32
  6. Step 6: Final answer
    x = 10,610.39

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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.