Home / 13,656.79-18,846.72-7,688.67

Finding the Fourth Proportional to 13,656.79, 18,846.72 and 7,688.67

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Solution

The fourth proportional to 13,656.79, 18,846.72 and 7,688.67 is: 10,610.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.79 : 18,846.72 = 7,688.67 : x
  2. Step 2: Convert to fraction form
    13,656.79/18,846.72 = 7,688.67/x
  3. Step 3: Cross multiply
    13,656.79x = 18,846.72 × 7,688.67
  4. Step 4: Simplify right side
    13,656.79x = 144,906,210.66
  5. Step 5: Solve for x
    x = 144,906,210.66/13,656.79
  6. Step 6: Final answer
    x = 10,610.56

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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.