Home / 13,685.80-18,886.41-7,398.17

Finding the Fourth Proportional to 13,685.80, 18,886.41 and 7,398.17

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Solution

The fourth proportional to 13,685.80, 18,886.41 and 7,398.17 is: 10,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.80 : 18,886.41 = 7,398.17 : x
  2. Step 2: Convert to fraction form
    13,685.80/18,886.41 = 7,398.17/x
  3. Step 3: Cross multiply
    13,685.80x = 18,886.41 × 7,398.17
  4. Step 4: Simplify right side
    13,685.80x = 139,724,871.87
  5. Step 5: Solve for x
    x = 139,724,871.87/13,685.80
  6. Step 6: Final answer
    x = 10,209.48

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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.