Home / 13,656.54-18,846.70-7,688.87

Finding the Fourth Proportional to 13,656.54, 18,846.70 and 7,688.87

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Solution

The fourth proportional to 13,656.54, 18,846.70 and 7,688.87 is: 10,611.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.54 : 18,846.70 = 7,688.87 : x
  2. Step 2: Convert to fraction form
    13,656.54/18,846.70 = 7,688.87/x
  3. Step 3: Cross multiply
    13,656.54x = 18,846.70 × 7,688.87
  4. Step 4: Simplify right side
    13,656.54x = 144,909,712.77
  5. Step 5: Solve for x
    x = 144,909,712.77/13,656.54
  6. Step 6: Final answer
    x = 10,611.01

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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.