Home / 13,685.92-18,891.68-10,655.04

Finding the Fourth Proportional to 13,685.92, 18,891.68 and 10,655.04

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Solution

The fourth proportional to 13,685.92, 18,891.68 and 10,655.04 is: 14,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.92 : 18,891.68 = 10,655.04 : x
  2. Step 2: Convert to fraction form
    13,685.92/18,891.68 = 10,655.04/x
  3. Step 3: Cross multiply
    13,685.92x = 18,891.68 × 10,655.04
  4. Step 4: Simplify right side
    13,685.92x = 201,291,606.07
  5. Step 5: Solve for x
    x = 201,291,606.07/13,685.92
  6. Step 6: Final answer
    x = 14,707.93

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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.