Home / 13,656.28-18,846.02-7,688.17

Finding the Fourth Proportional to 13,656.28, 18,846.02 and 7,688.17

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Solution

The fourth proportional to 13,656.28, 18,846.02 and 7,688.17 is: 10,609.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.28 : 18,846.02 = 7,688.17 : x
  2. Step 2: Convert to fraction form
    13,656.28/18,846.02 = 7,688.17/x
  3. Step 3: Cross multiply
    13,656.28x = 18,846.02 × 7,688.17
  4. Step 4: Simplify right side
    13,656.28x = 144,891,405.58
  5. Step 5: Solve for x
    x = 144,891,405.58/13,656.28
  6. Step 6: Final answer
    x = 10,609.87

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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.